Fixed #15328 -- Corrected an example in the CBV docs and added a note about...

Fixed #15328 -- Corrected an example in the CBV docs and added a note about the parameters passed by method_deorator to the method on the class. Thanks to airstrike for the report and lrekucki for the correction.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@15563 bcc190cf-cafb-0310-a4f2-bffc1f526a37