[1.2.X] Fixed #14551 -- corrected a type in the remote user auth...

[1.2.X] Fixed #14551 -- corrected a type in the remote user auth documentation.  Thanks to mag for the report and fix.  Backport of [14344].

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@14345 bcc190cf-cafb-0310-a4f2-bffc1f526a37