Fixed #24175 -- Updated docstring convention.

docs/internals/contributing/writing-code/coding-style.txt

@@ -40,21 +40,13 @@ Python style
 
       from django.views.generic.base import View
 
-* In docstrings, use "action words" such as::
-
-      def foo():
-          """
-          Calculates something and returns the result.
-          """
-          pass
-
-  Here's an example of what not to do::
+* In docstrings, follow :pep:`257`. For example::
 
       def foo():
           """
           Calculate something and return the result.
           """
-          pass
+          ...
 
 Template style
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