[gnomemm-website] Replace remaining git.gnome.org URLs to gitlab.gnome.org

[Kjell Ahlstedt <kjellahl src gnome org>]

commit f697dbddf0008a49433d4557022b253d1804d93e
Author: Kjell Ahlstedt <kjellahlstedt gmail com>
Date:   Wed Jan 5 15:46:26 2022 +0100

    Replace remaining git.gnome.org URLs to gitlab.gnome.org

 docs/C/documentation.xml | 6 +++---
 docs/C/extra.xml         | 3 ---
 docs/C/git.xml           | 2 +-
 3 files changed, 4 insertions(+), 7 deletions(-)
---
diff --git a/docs/C/documentation.xml b/docs/C/documentation.xml
index e17f947..9f5780b 100644
--- a/docs/C/documentation.xml
+++ b/docs/C/documentation.xml
@@ -5,7 +5,7 @@
   <!ENTITY url_refdocs_base_gtkmm_html "https://developer.gnome.org/gtkmm/stable/";>
   <!ENTITY url_refdocs_base_book_html "https://developer.gnome.org/gtkmm-tutorial/stable/";>
   <!ENTITY url_refdocs_base_pangomm_html "https://developer.gnome.org/pangomm/stable/";>
-  <!ENTITY url_examples_base "https://git.gnome.org/browse/gtkmm-documentation/tree/examples/book/";>
+  <!ENTITY url_examples_base "https://gitlab.gnome.org/GNOME/gtkmm-documentation/tree/master/examples/book/";>
 ]>
 
   <article id="documentation">
@@ -169,10 +169,10 @@
             <td>
               <itemizedlist>
                 <listitem>
-                  <para><ulink url="https://git.gnome.org/browse/gtkmm/tree/README.SUN?view=markup";>Solaris, 
with Sun&apos;s Forte C++.</ulink></para>
+                  <para><ulink url="https://gitlab.gnome.org/GNOME/gtkmm/blob/master/README.SUN";>Solaris, 
with Sun&apos;s Forte C++.</ulink></para>
                 </listitem>
                 <listitem>
-                  <para><ulink 
url="https://git.gnome.org/browse/gtkmm/tree/README.win32?view=markup";>Windows, with mingw and 
cygwin</ulink></para>
+                  <para><ulink url="https://gitlab.gnome.org/GNOME/gtkmm/blob/master/README.win32";>Windows, 
with mingw and cygwin</ulink></para>
                 </listitem>
               </itemizedlist>
             </td>
diff --git a/docs/C/extra.xml b/docs/C/extra.xml
index e0d38f2..ca1c4e8 100644
--- a/docs/C/extra.xml
+++ b/docs/C/extra.xml
@@ -102,9 +102,6 @@ some other projects using the same toolkit.</para>
             <listitem>
               <para><ulink url="http://timfx.sourcearchive.com/";>timfx</ulink> digital video effects plug-in 
for Kino</para>
             </listitem>
-            <listitem>
-              <para><ulink url="https://git.gnome.org/browse/monster-masher/";>Monster Masher</ulink> 
game</para>
-            </listitem>
             <listitem>
               <para><ulink url="http://gparted.sourceforge.net/";>GParted</ulink> disk partitioning 
tool</para>
             </listitem>
diff --git a/docs/C/git.xml b/docs/C/git.xml
index e4c385c..3d28ec0 100644
--- a/docs/C/git.xml
+++ b/docs/C/git.xml
@@ -8,7 +8,7 @@
       <title>Git</title>
       <para>We use <ulink url="http://git-scm.com/";>Git</ulink> to maintain our source
     code, in the <ulink url="https://www.gnome.org";>GNOME</ulink> Git repository.
-    Additional information about git.gnome.org is available at <ulink 
url="https://wiki.gnome.org/Git";>wiki.gnome.org/Git</ulink>.</para>
+    Additional information about gitlab.gnome.org is available at <ulink 
url="https://wiki.gnome.org/Git";>wiki.gnome.org/Git</ulink>.</para>
       <para>glibmm and gtkmm are in the <ulink url="https://gitlab.gnome.org/GNOME/glibmm/";>glibmm</ulink> 
and <ulink url="https://gitlab.gnome.org/GNOME/gtkmm/";>gtkmm</ulink> modules.
     There is also a <ulink 
url="https://gitlab.gnome.org/GNOME/gtkmm-documentation/";>gtkmm-documentation</ulink> module which contains 
the gtkmm book and its examples. See below for instructions.</para>
       <para>You will need to run the autogen.sh script to generate the build files. We