Always use parentheses when documenting a method with no arguments.

docs/howto/custom-model-fields.txt

@@ -193,7 +193,7 @@ card values plus their suits; 104 characters in total.
     you want your fields to be more strict about the options they select, or to
     use the simpler, more permissive behavior of the current fields.
 
-.. method:: Field.__init__
+.. method:: Field.__init__()
 
 The :meth:`~django.db.models.Field.__init__` method takes the following
 parameters:

docs/howto/custom-template-tags.txt

@@ -118,7 +118,7 @@ your function. Example:
 Registering custom filters
 ~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-.. method:: django.template.Library.filter
+.. method:: django.template.Library.filter()
 
 Once you've written your filter definition, you need to register it with
 your ``Library`` instance, to make it available to Django's template language:
@@ -157,7 +157,7 @@ are described in :ref:`filters and auto-escaping <filters-auto-escaping>` and
 Template filters that expect strings
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-.. method:: django.template.defaultfilters.stringfilter
+.. method:: django.template.defaultfilters.stringfilter()
 
 If you're writing a template filter that only expects a string as the first
 argument, you should use the decorator ``stringfilter``. This will
@@ -750,7 +750,7 @@ cannot resolve the string passed to it in the current context of the page.
 Simple tags
 ~~~~~~~~~~~
 
-.. method:: django.template.Library.simple_tag
+.. method:: django.template.Library.simple_tag()
 
 Many template tags take a number of arguments -- strings or template variables
 -- and return a string after doing some processing based solely on