docs: Update link to the discussion forum

The README file still links to the old web page about mailing lists; the
link is now a 404 after the website redesign, and we don't use mailing
lists any more, in favour of Discourse.

diff --git a/README.md b/README.md
index 42ab8721155b139a236f00a8826607a5208e429a..a4ec1a045267e5ace2fc0b81b40a0461e2775dd1 100644 (file)
--- a/README.md
+++ b/README.md
@@ -27,9 +27,9 @@ The official developers blog
 
   - https://blog.gtk.org
 
-Information about mailing lists can be found at
+Discussion forum
 
-  - http://www.gtk.org/mailing-lists.php
+  - https://discourse.gnome.org/c/platform/core/
 
 Nightly documentation can be found at
   - Gtk: https://gnome.pages.gitlab.gnome.org/gtk/gtk/