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

[Sébastien Wilmet <swilmet src gnome org>]

commit bf2030a8d74a64db1d0cf88e4fd2047f2b785e4c
Author: Sébastien Wilmet <swilmet informatique-libre be>
Date:   Fri Jul 15 11:35:38 2022 +0200

    docs: update/simplify CONTRIBUTING.md

 CONTRIBUTING.md | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)
---
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index dfbee7f27..9dcd7e930 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
 ---------------------------------------------
@@ -15,9 +15,7 @@ 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
 --------------------
@@ -25,9 +23,6 @@ Software development
 To get started with gedit software 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)