Tightened change to docs/model-api.txt from [4692]
Tightened change to docs/model-api.txt from [4692]

--HG--
extra : convert_revision : svn%3Abcc190cf-cafb-0310-a4f2-bffc1f526a37/django/trunk%404746

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