Fixed #17152 -- Fixed a few anomalies in the `contrib.formtools` documentation...

Fixed #17152 -- Fixed a few anomalies in the `contrib.formtools` documentation and templates. Thanks, Bradley Ayers.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@17072 bcc190cf-cafb-0310-a4f2-bffc1f526a37