Fixed #4640 -- Fixed import to stringfilter in docs. Proposed solution to move stringfilter into django.template.__init__ introduces a circular import problem.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@5667 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/templates_python.txt

@@ -674,9 +674,9 @@ If you are writing a template filter which only expects a string as the first
 argument, you should use the included decorator ``stringfilter`` which will convert
 an object to it's string value before being passed to your function::
 
-    from django import template
+    from django.template.defaultfilters import stringfilter
 
-    @template.stringfilter
+    @stringfilter
     def lower(value):
         return value.lower()