Fixed #8539: fixed PEP references. Thanks, carljm.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@8552 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/internals/contributing.txt

@@ -411,7 +411,7 @@ Coding style
 
 Please follow these coding standards when writing code for inclusion in Django:
 
-    * Unless otherwise specified, follow :pep:8.
+    * Unless otherwise specified, follow :pep:`8`.
 
       You could use a tool like `pep8.py`_ to check for some problems in this
       area, but remember that PEP 8 is only a guide, so respect the style of

docs/topics/db/models.txt

@@ -733,7 +733,7 @@ the resulting rows. For example::
 
 :class:`connection <django.db.backends.DatabaseWrapper>` and
 :class:`<django.db.backends.CursorWrapper>` mostly implement the standard Python
-DB-API -- see :pep:249 -- with the addition of Django's :ref:`transaction
+DB-API -- see :pep:`249` -- with the addition of Django's :ref:`transaction
 handling <topics-db-transactions>`. If you're not familiar with the Python
 DB-API, note that the SQL statement in :meth:`cursor.execute()
 <django.db.backends.CursorWrapper.execute>` uses placeholders, ``"%s"``, rather