[gedit/wip/next: 1/2] docs: update/simplify CONTRIBUTING.md

[Sébastien Wilmet <swilmet src gnome org>]

commit cd5ea67ee554dfc964229a7ac8c2dc582d80081a
Author: Sébastien Wilmet <swilmet informatique-libre be>
Date:   Fri Jul 15 11:35:38 2022 +0200

    docs: update/simplify CONTRIBUTING.md

 CONTRIBUTING.md | 20 +++++---------------
 1 file changed, 5 insertions(+), 15 deletions(-)
---
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index dfbee7f27..793978ab9 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -4,9 +4,9 @@ How to contribute to gedit
 gedit development relies on voluntary contributions and everyone is invited to
 help.
 
-If you are interested in helping us to improve gedit, please contact the
-developers on the gedit mailing list and offer your help. See the “Getting in
-Touch” section on the [gedit wiki page](https://wiki.gnome.org/Apps/Gedit).
+If you are interested in helping us to improve gedit, you can contact the
+developers, see the “Getting in Touch” section on the
+[gedit wiki page](https://wiki.gnome.org/Apps/Gedit).
 
 Contributions other than software development
 ---------------------------------------------
@@ -15,20 +15,10 @@ See the [GNOME wiki](https://wiki.gnome.org/).
 
 Doing **bug triaging** on the bug tracker is a very useful task for gedit,
 because gedit is used by many people and there are therefore lots of bug reports
-or feature requests. The gedit developers often have difficulties to triage all
-the bugs and do first line support. Having a curated list of important bugs to
-fix would tremendously help the gedit developers.
+or feature requests.
 
 Software development
 --------------------
 
-To get started with gedit software development, see the file
+To get started with gedit development, see the file
 [docs/gedit-development-getting-started.md](docs/gedit-development-getting-started.md).
-
-gedit follows the same guidelines and code conventions as GtkSourceView. See
-the [GtkSourceView HACKING file](https://gitlab.gnome.org/GNOME/gtksourceview/blob/master/HACKING).
-
-The gedit and gedit-plugins Git repositories are hosted on the GNOME GitLab
-instance:
-- [gedit on GitLab](https://gitlab.gnome.org/GNOME/gedit)
-- [gedit-plugins on GitLab](https://gitlab.gnome.org/GNOME/gedit-plugins)