[gdk-pixbuf] docs: Update links to GDK

[Emmanuele Bassi <ebassi src gnome org>]

commit d1f5129e8d77c6e28b193466ca074daa9f554dff
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Thu Apr 26 12:01:32 2018 +0100

    docs: Update links to GDK
    
    Remove long since gone intra-library links, and point to the API
    reference website instead.

 contrib/gdk-pixbuf-xlib/gdk-pixbuf-xlibrgb.c       |    3 +--
 .../gdk-pixbuf/gdk-pixbuf-from-drawables.xml       |    8 ++++----
 docs/reference/gdk-pixbuf/gdk-pixbuf-rendering.xml |    4 ++--
 3 files changed, 7 insertions(+), 8 deletions(-)
---
diff --git a/contrib/gdk-pixbuf-xlib/gdk-pixbuf-xlibrgb.c b/contrib/gdk-pixbuf-xlib/gdk-pixbuf-xlibrgb.c
index eeb1559..e0d4f79 100644
--- a/contrib/gdk-pixbuf-xlib/gdk-pixbuf-xlibrgb.c
+++ b/contrib/gdk-pixbuf-xlib/gdk-pixbuf-xlibrgb.c
@@ -51,9 +51,8 @@
  * SECTION:gdk-pixbuf-xlib-rgb
  * @Short_description: Rendering RGB buffers to X drawables.
  * @Title: XlibRGB
- * @See_also:    GdkRGB
  * 
- * The XlibRGB set of functions is a port of the #GdkRGB library to
+ * The XlibRGB set of functions is a port of the GdkRGB library to
  * use plain Xlib and X drawables.  You can use these functions to
  * render RGB buffers into drawables very quickly with high-quality
  * dithering.
diff --git a/docs/reference/gdk-pixbuf/gdk-pixbuf-from-drawables.xml 
b/docs/reference/gdk-pixbuf/gdk-pixbuf-from-drawables.xml
index 2d9f43a..98731ed 100644
--- a/docs/reference/gdk-pixbuf/gdk-pixbuf-from-drawables.xml
+++ b/docs/reference/gdk-pixbuf/gdk-pixbuf-from-drawables.xml
@@ -16,10 +16,10 @@
 <refsect1>
 <title>Description</title>
   <para>
-    The functions to take the image data from a GDK drawable and dump it 
-    into a pixbuf are contained in GDK, see the 
-    <link linkend="gdk-Pixbufs">Pixbufs</link> section of the GDK 
-    documentation.
+    The functions to take the image data from a GDK windowing system surface
+    and store them into a GdkPixbuf are typically provided by GDK; see
+    <link linkend="https://developer.gnome.org/gdk3/stable/gdk3-Pixbufs.html";>the
+    GDK documentation</link>.
   </para>
 </refsect1>
 
diff --git a/docs/reference/gdk-pixbuf/gdk-pixbuf-rendering.xml 
b/docs/reference/gdk-pixbuf/gdk-pixbuf-rendering.xml
index 336004c..b1a23af 100644
--- a/docs/reference/gdk-pixbuf/gdk-pixbuf-rendering.xml
+++ b/docs/reference/gdk-pixbuf/gdk-pixbuf-rendering.xml
@@ -18,8 +18,8 @@
 <title>Description</title>
   <para>
     The functions to render pixbufs to GDK drawables are contained in 
-    GDK, see the <link linkend="gdk-Pixbufs">Pixbufs</link> section 
-    of the GDK documentation.
+    GDK, see the <link linkend="https://developer.gnome.org/gdk3/stable/gdk3-Cairo-Interaction.html";>GDK
+    documentation</link>.
   </para>
 </refsect1>