[gimp-help] Fix warning about link element has no content in glossary.

[Jacob Boerema <jboerema src gnome org>]

commit f46519ce33e3af39948774530b1e40c348d3a74a
Author: Jacob Boerema <jgboerema gmail com>
Date:   Thu May 20 14:34:21 2021 -0400

    Fix warning about link element has no content in glossary.

 src/glossary/glossary.xml | 104 +++++++++++++++++++++++-----------------------
 1 file changed, 52 insertions(+), 52 deletions(-)
---
diff --git a/src/glossary/glossary.xml b/src/glossary/glossary.xml
index 1e5ca20ce..52d62c106 100644
--- a/src/glossary/glossary.xml
+++ b/src/glossary/glossary.xml
@@ -270,7 +270,7 @@
         being perceptually uniform than it is to being linear.</para></listitem>
       </orderedlist>
 
-      <!--TO TRANSLATORS: a png file without text is in 
+      <!--TO TRANSLATORS: a png file without text is in
 https://gitlab.gnome.org/GNOME/gimp-help/tree/master/docs/xcf images folder-->
       <mediaobject>
         <imageobject>
@@ -802,7 +802,7 @@ https://gitlab.gnome.org/GNOME/gimp-help/tree/master/docs/xcf images folder-->
         resume working on any other layers in the image.
       </para>
       <para>
-        Floating selections are described in 
+        Floating selections are described in
         <xref linkend="gimp-selection-float"/>.
       </para>
       <para>
@@ -1388,7 +1388,7 @@ https://gitlab.gnome.org/GNOME/gimp-help/tree/master/docs/xcf images folder-->
       </para>
     </glossdef>
   </glossentry>
-  
+
   <glossentry id="glossary-iptc">
     <glossterm>
       <phrase>IPTC</phrase>
@@ -1398,9 +1398,9 @@ https://gitlab.gnome.org/GNOME/gimp-help/tree/master/docs/xcf images folder-->
     </indexterm>
     <glossdef>
       <para>
-        IPTC is an acronym for International Press Telecommunications Council 
-        which developed the Information Interchange Model (IIM) for text, 
-        image and other media types metadata. Refer to 
+        IPTC is an acronym for International Press Telecommunications Council
+        which developed the Information Interchange Model (IIM) for text,
+        image and other media types metadata. Refer to
         <xref linkend="bibliography-online-wkpd-iptc"/>.
       </para>
     </glossdef>
@@ -1658,120 +1658,120 @@ https://gitlab.gnome.org/GNOME/gimp-help/tree/master/docs/xcf images folder-->
       </para>
     </glossdef>
   </glossentry>
-       
+
        <glossentry id="glossary-pass-through">
     <glossterm>
       <phrase>Pass-through</phrase>
     </glossterm>
     <glossdef>
                        <para>
-                               Normally, the layers inside a layer group are isolated from the rest of 
-                               the image -- the layer group is essentially a separate sub-image, 
-                               living inside the bigger image; you can merge the group into a single 
-                               layer, replace the original group with it, and the result would be the 
+                               Normally, the layers inside a layer group are isolated from the rest of
+                               the image -- the layer group is essentially a separate sub-image,
+                               living inside the bigger image; you can merge the group into a single
+                               layer, replace the original group with it, and the result would be the
                                same.
                        </para>
                        <para>
-                               In following examples, the names of the relevant layers in the images 
-                               specify the layer mode, with the composite mode in parentheses where 
+                               In following examples, the names of the relevant layers in the images
+                               specify the layer mode, with the composite mode in parentheses where
                                applicable, and the layer's opacity.
                        </para>
                        <mediaobject>
                                <imageobject>
-                                       <imagedata format="PNG" 
+                                       <imagedata format="PNG"
 fileref="images/dialogs/examples/layer-groups-pass-through-ex1.png"/>
                                </imageobject>
                                <caption>
                                        <para>
-                                               In this example, the group uses Normal mode; note that the 
green 
-                                               and blue layers don't affect the red layer: the green layer's 
color 
-                                               isn't added to the the red layer's color, and the blue layer 
only 
+                                               In this example, the group uses Normal mode; note that the 
green
+                                               and blue layers don't affect the red layer: the green layer's 
color
+                                               isn't added to the the red layer's color, and the blue layer 
only
                                                erases the green layer.
                                        </para>
                                </caption>
                        </mediaobject>
-                       
+
                        <para>
-                               Layer groups using Pass-through mode are different: the layers inside 
-                               them <quote>see</quote> the layers below the group, and interact with 
-                               them according to their layer mode. 
+                               Layer groups using Pass-through mode are different: the layers inside
+                               them <quote>see</quote> the layers below the group, and interact with
+                               them according to their layer mode.
                        </para>
                        <mediaobject>
                                <imageobject>
-                                       <imagedata format="PNG" 
+                                       <imagedata format="PNG"
 fileref="images/dialogs/examples/layer-groups-pass-through-ex2.png"/>
                                </imageobject>
                                <caption>
                                        <para>
-                                               In this example, the group uses Pass-through mode. Note that 
the 
-                                               green layer's color <emphasis>is</emphasis> added to the red 
-                                               layer's color, and the blue layer erases both the green and 
the red 
+                                               In this example, the group uses Pass-through mode. Note that 
the
+                                               green layer's color <emphasis>is</emphasis> added to the red
+                                               layer's color, and the blue layer erases both the green and 
the red
                                                layers.
                                        </para>
                                </caption>
                        </mediaobject>
-                       
+
                        <para>
-                               In simple cases, pass-through groups behave as though there is no group 
+                               In simple cases, pass-through groups behave as though there is no group
                                involved at all.
                        </para>
                        <mediaobject>
                                <imageobject>
-                                       <imagedata format="PNG" 
+                                       <imagedata format="PNG"
 fileref="images/dialogs/examples/layer-groups-pass-through-ex3.png"/>
                                </imageobject>
                                <caption>
                                        <para>
-                                               The green and blue layers are not inside a group, and the 
result is 
+                                               The green and blue layers are not inside a group, and the 
result is
                                                the same as in the preceding example.
                                        </para>
                                </caption>
                        </mediaobject>
                        <para>
-                               In these cases, the group is primarily an organizational tool: it 
-                               allows you to group together several layers, achieving some desired 
+                               In these cases, the group is primarily an organizational tool: it
+                               allows you to group together several layers, achieving some desired
                                effect, and handle them as a unit.
                        </para>
 
                        <para>
-                               However, in general, pass-through groups are not equivalent to having 
-                               no group at all.  For example, when the group's opacity is less than 
-                               100%, pass-through groups still behave as a single unit, applying the 
-                               opacity to the group as a whole (like a normal group would) rather than 
-                               to the individual layers, while still letting the group layers interact 
+                               However, in general, pass-through groups are not equivalent to having
+                               no group at all.  For example, when the group's opacity is less than
+                               100%, pass-through groups still behave as a single unit, applying the
+                               opacity to the group as a whole (like a normal group would) rather than
+                               to the individual layers, while still letting the group layers interact
                                with the background layers.
                        </para>
                        <figure><title>Three images</title>
                        <mediaobject>
                                <imageobject>
-                                       <imagedata format="PNG" 
+                                       <imagedata format="PNG"
 fileref="images/dialogs/examples/layer-groups-pass-through-ex4.png"/>
                                </imageobject>
                        </mediaobject>
                        <mediaobject>
                                <imageobject>
-            <imagedata format="PNG" 
+            <imagedata format="PNG"
 fileref="images/dialogs/examples/layer-groups-pass-through-ex5.png"/>
                                </imageobject>
                        </mediaobject>
                        <mediaobject>
                                <imageobject>
-            <imagedata format="PNG" 
+            <imagedata format="PNG"
 fileref="images/dialogs/examples/layer-groups-pass-through-ex6.png"/>
                                </imageobject>
                        </mediaobject>
                        </figure>
                        <para>
-                               Compare these three images, which demonstrate the same compositions as 
-                               above, with the group (or the individual layers, in the last example) 
-                               having an opacity of 50%. When using pass-through groups to group 
-                               together several layers achieving a collective effect, the group's 
-                               opacity essentially lets you control the <quote>strength</quote> of the 
-                               effect, which can't be achieved using either normal groups, or 
+                               Compare these three images, which demonstrate the same compositions as
+                               above, with the group (or the individual layers, in the last example)
+                               having an opacity of 50%. When using pass-through groups to group
+                               together several layers achieving a collective effect, the group's
+                               opacity essentially lets you control the <quote>strength</quote> of the
+                               effect, which can't be achieved using either normal groups, or
                                individual layers.
                        </para>
                </glossdef>
-  </glossentry>                
+  </glossentry>
 
   <glossentry id="glossary-path">
     <glossterm>
@@ -2186,8 +2186,8 @@ fileref="images/dialogs/examples/layer-groups-pass-through-ex6.png"/>
         the color used is the color of the active layer itself.
       </para>
       <para>
-        See also <link linkend="gimp-tool-clone"/> for using Sample Merged in 
-        non-destructive image editing.
+        See also the <link linkend="gimp-tool-clone">Clone Tool</link> for
+        using Sample Merged in non-destructive image editing.
       </para>
     </glossdef>
   </glossentry>
@@ -2495,13 +2495,13 @@ fileref="images/dialogs/examples/layer-groups-pass-through-ex6.png"/>
         <acronym>GIMP</acronym> 1.2.
       </para>
       <para>
-        Documentation about XCF format can be found at 
-          <ulink 
+        Documentation about XCF format can be found at
+          <ulink
 url="https://gitlab.gnome.org/GNOME/gimp/blob/master/devel-docs/xcf.txt"/>.
       </para>
     </glossdef>
   </glossentry>
-  
+
   <glossentry id="glossary-xmp">
     <glossterm>
       <phrase>
@@ -2513,7 +2513,7 @@ url="https://gitlab.gnome.org/GNOME/gimp/blob/master/devel-docs/xcf.txt"/>.
     </indexterm>
     <glossdef>
       <para>
-        XMP is an acronym for Extensible Metadata Platform. It is a metadata 
+        XMP is an acronym for Extensible Metadata Platform. It is a metadata
         format based on XML used in PDF and photographs. Report to
         <xref linkend="bibliography-online-wkpd-xmp"/> for detailed explanations.
       </para>