Added missing newline in docstring; refs #20945.

django/templatetags/cache.py

@@ -71,6 +71,7 @@ def do_cache(parser, token):
     Optionally the cache to use may be specified thus::
 
         {% cache ....  using="cachename" %}
+
     Each unique set of arguments will result in a unique cache entry.
     """
     nodelist = parser.parse(('endcache',))