Fixed #16591 -- Fixed some mismatched variable names in a widgets reference...

Fixed #16591 -- Fixed some mismatched variable names in a widgets reference example. Thanks to santi.romero, el barto, and julien.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@16626 bcc190cf-cafb-0310-a4f2-bffc1f526a37