Small formatting change to docs/model-api.txt change from [3597] -- double hyphens instead of a single hyphen
Small formatting change to docs/model-api.txt change from [3597] -- double hyphens instead of a single hyphen

--HG--
extra : convert_revision : svn%3Abcc190cf-cafb-0310-a4f2-bffc1f526a37/django/trunk%403598

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