[gimp-help] Fix issue #227: simple typo to see whether doc site works

[Julien Hardlin <jhardlin src gnome org>]

commit cbdd8ebcb80b7c080873123915019aae04d5f482
Author: Julien Hardelin <jhardlin orange fr>
Date:   Tue Jul 14 18:01:49 2020 +0200

    Fix issue #227: simple typo to see whether doc site works

 po/fr/filters/Compendium.po | 29 -------------------
 po/fr/menus/Compendium.po   | 68 ---------------------------------------------
 src/concepts/concepts.xml   |  6 ++--
 3 files changed, 3 insertions(+), 100 deletions(-)
---
diff --git a/src/concepts/concepts.xml b/src/concepts/concepts.xml
index be680ff50..f65db308f 100644
--- a/src/concepts/concepts.xml
+++ b/src/concepts/concepts.xml
@@ -75,7 +75,7 @@
       </listitem>
     </varlistentry>
     <varlistentry>
-      <term>Layers</term><!--Modified 2011-02-26-->
+      <term>Layers</term>
       <listitem>
         <para>
           If a simple image can be compared to a single sheet of paper, an
@@ -93,7 +93,7 @@
     </varlistentry>
     <varlistentry>
       <term>
-        <phrase>Resolution</phrase><!--Added 2011-02-26-->
+        <phrase>Resolution</phrase>
         <indexterm>
           <primary>Resolution</primary>
         </indexterm>
@@ -191,7 +191,7 @@
       <term>Selections</term>
       <listitem>
         <para>
-          Often when modify an image, you only want a part of the image
+          Often when modifying an image, you only want a part of the image
           to be affected. The <quote>selection</quote>
           mechanism makes this possible. Each image has its own selection,
           which you normally see as a moving dashed line separating the