[gtk-doc: 1/2] help: Fix link to wiki.gnome.org

[Matthias Clasen <matthiasc src gnome org>]

commit 634a61bf669ea06281725fb2a278c7f6ca2c545b
Author: James Westman <james flyingpimonster net>
Date:   Wed Aug 26 18:14:13 2020 -0500

    help: Fix link to wiki.gnome.org
    
    A link has been changed on wiki.gnome.org (the + has been dropped from GTK)
    and needed to be updated here.

 help/manual/C/index.docbook | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/help/manual/C/index.docbook b/help/manual/C/index.docbook
index 36b51fe..a33bc28 100644
--- a/help/manual/C/index.docbook
+++ b/help/manual/C/index.docbook
@@ -1217,7 +1217,7 @@ gtkdoc-fixxref --module=$(DOC_MODULE) --module-dir=html
 
       <para>
         More examples of what markdown tags are supported can be found in the
-        <ulink url="https://wiki.gnome.org/Projects/GTK%2B/DocumentationSyntax/Markdown";>GTK+ Documentation 
Markdown Syntax Reference</ulink>.
+        <ulink url="https://wiki.gnome.org/Projects/GTK/DocumentationSyntax/Markdown";>GTK Documentation 
Markdown Syntax Reference</ulink>.
       </para>
 
       <tip>