Improve FAQ link in documentation (for issue #16435).

Doc/faq/index.rst

+.. _faq-index:
+
 ###################################
   Python Frequently Asked Questions
 ###################################

Doc/tutorial/whatnow.rst

@@ -59,9 +59,8 @@ python-list@python.org.  The newsgroup and mailing list are gatewayed, so
 messages posted to one will automatically be forwarded to the other.  There are
 around 120 postings a day (with peaks up to several hundred), asking (and
 answering) questions, suggesting new features, and announcing new modules.
-Before posting, be sure to check the list of `Frequently Asked Questions
-<http://www.python.org/3/doc/faq/>`_ (also called the FAQ),
-or look for it in the :file:`Misc/` directory of the Python source distribution.
+Before posting, be sure to check the list of :ref:`Frequently Asked Questions
+<faq-index>` (also called the FAQ).
 Mailing list archives are available at http://mail.python.org/pipermail/.
 The FAQ answers many of the questions that come up again and again,
 and may already contain the solution for your problem.