[1.0.X] Fixed #10400: Added a note in the file uploads doc about the correct...

[1.0.X] Fixed #10400: Added a note in the file uploads doc about the correct form type needed for file uploads to work. Thanks claudep and timo. 

r10816 from trunk.


git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.0.X@10817 bcc190cf-cafb-0310-a4f2-bffc1f526a37