Fixed #18118 -- Improved documentation for contrib.auth.hashers utility...

Fixed #18118 -- Improved documentation for contrib.auth.hashers utility functions. Thanks Mathieu Agopian for the report and Ramiro Morales for the review.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@17905 bcc190cf-cafb-0310-a4f2-bffc1f526a37