Add the new feature ideas tracker to the new ticket readme

Co-authored-by: Tim Schilling <[email protected]>

Author: LilyAcorn

trac-env/templates/custom_ticket.html

@@ -12,9 +12,9 @@ <h2>Please read this first:</h2>
       Report bugs and suggest documentation changes using this ticket tracker.
     </li>
     <li>
-      New feature proposals should first be discussed on the <a href="https://forum.djangoproject.com/c/internals/5">Django Forum</a>.
-      Once feedback has been gathered, you can use this ticket tracker to open a ticket for the new feature.
+      New feature proposals should be created on the <a href="https://github.com/django/new-features/issues/new/choose">new feature idea tracker</a>. The <a href="https://github.com/orgs/django/projects/24">project board view</a> can be used to view existing ideas and their progress.
       Please include links to relevant discussions from the forum (or other sources).
+      If the feature is approved for Django core, a feature ticket may be created here on Trac.
     </li>
     <li>
       Don't use the ticket system for