Fixed #12688 -- Removed typo in manager docs. Thanks, orokusaki for the...

Fixed #12688 -- Removed typo in manager docs.  Thanks, orokusaki for the report and timo for the patch.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@12485 bcc190cf-cafb-0310-a4f2-bffc1f526a37