move 'Documenting Python' doc section here

Author: sandrotosi

docquality.rst

@@ -8,7 +8,7 @@ keeping a high level of quality takes a lot of effort. Help is always
 appreciated with the documentation, and it requires little programming
 experience (with or without Python).
 
-`Documenting Python`_ covers the details of how Python's documentation works.
+:ref:`Documenting Python <documenting>` covers the details of how Python's documentation works.
 It includes an explanation of the markup used (although you can figure a lot
 out simply by looking at pre-existing documentation) and how to build the
 documentation (which allows you to see how your changes will look along with
@@ -32,8 +32,6 @@ some bug reports being directly emailed to the mailing list. There is also the
 <http://mail.python.org/mailman/listinfo/doc-sig>`_ which discusses the
 documentation toolchain, projects, standards, etc.
 
-.. _Documenting Python: http://docs.python.org/dev/documenting/
-
 
 Helping with issues filed on the issue tracker
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