Add support link to Discourse forum

Author: bhrutledge

source/support.rst

@@ -5,5 +5,6 @@ How to Get Support
 For support related to a specific project, see the links on the :doc:`Projects
 <key_projects>` page.
 
-For something more general, or when you're just not sure, use the `distutils-sig
-<http://mail.python.org/mailman/listinfo/distutils-sig>`_ list.
+For something more general, or when you're just not sure, use the `Python
+Packaging Discourse forum <https://discuss.python.org/c/packaging/>`_ or the
+`distutils-sig <http://mail.python.org/mailman/listinfo/distutils-sig>`_ list.