Fixed #30808 -- Added the Django Forum to contributing index.

docs/internals/contributing/index.txt

@@ -6,6 +6,11 @@ Django is a community that lives on its volunteers. As it keeps growing, we
 always need more people to help others. As soon as you learn Django, you can
 contribute in many ways:
 
+* Join the `Django forum`_. This forum is a place for discussing the Django
+  framework and applications and projects that use it. This is also a good
+  place to ask and answer any questions related to installing, using, or
+  contributing to Django.
+
 * Join the |django-users| mailing list and answer questions. This
   mailing list has a huge audience, and we really want to maintain a
   friendly and helpful atmosphere. If you're new to the Django community,
@@ -66,6 +71,7 @@ Browse the following sections to find out how:
 .. _#django IRC channel: irc://irc.freenode.net/django
 .. _#django-dev IRC channel: irc://irc.freenode.net/django-dev
 .. _community page: https://www.djangoproject.com/community/
+.. _Django forum: https://forum.djangoproject.com/
 .. _register it here: https://www.djangoproject.com/community/add/blogs/
 .. _ticket tracker: https://code.djangoproject.com/
 .. _easy pickings: https://code.djangoproject.com/query?status=!closed&easy=1