Fixed #9033 - Add bullets to QuerySet extra() arguments. thanks julien for the...

Fixed #9033 - Add bullets to QuerySet extra() arguments. thanks julien for the suggestion and dwillis for the patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@14816 bcc190cf-cafb-0310-a4f2-bffc1f526a37