PYTHON-5628 - Update the link for help in the documentation (#2602)

Author: NoahStapp

doc/index.rst

@@ -22,7 +22,7 @@ work with MongoDB from Python.
 Getting Help
 ------------
 If you're having trouble or have questions about PyMongo, ask your question on
-our `MongoDB Community Forum <https://www.mongodb.com/community/forums/tag/python>`_.
+one of the platforms listed on `Technical Support <https://www.mongodb.com/docs/manual/support/>`_.
 You may also want to consider a
 `commercial support subscription <https://support.mongodb.com/welcome>`_.
 Once you get an answer, it'd be great if you could work it back into this