[1.1.X] Fixed #12745: The maxlength -> max_length change happened in 2007, we...

[1.1.X] Fixed #12745: The maxlength -> max_length change happened in 2007, we can probably stop mentioning it in the tutorial now. Backport of [12362] from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.1.X@12363 bcc190cf-cafb-0310-a4f2-bffc1f526a37