Fixed #4547 -- Included a fix missed in [5468].

git-svn-id: http://code.djangoproject.com/svn/django/trunk@5469 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/newforms.txt

@@ -1293,7 +1293,7 @@ dictionary.
 The previous paragraph means that if you are overriding ``Form.clean()``, you
 should iterate through ``self.cleaned_data.items()``, possibly considering the
 ``_errors`` dictionary attribute on the form as well. In this way, you will
-already know which fields have passed thei individual validation requirements.
+already know which fields have passed their individual validation requirements.
 
 A simple example
 ~~~~~~~~~~~~~~~~