Another minor grammatical fix in docs/modelforms.txt

3. Use the ``exclude`` attribute of the ``ModelForm``'s inner ``Meta``

   class.  This attribute, if given, should be a list of field names

   to exclude the form.

   to exclude from the form.

For example, if you want a form for the ``Author`` model (defined

above) that includes only the ``name`` and ``title`` fields, you would