[1.3.X] Fixed #16000 -- reference natural keys in contenttypes documentation. Thanks jsdalton.
[1.3.X] Fixed #16000 -- reference natural keys in contenttypes documentation. Thanks jsdalton.

Backport of r16536 from trunk.

git-svn-id: 6bee183d120e8e569924b918ee6c564bbb314a32@16537 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django-nonrel/django-nonrel,django-nonrel/django-nonrel,django-nonrel/django-nonrel