Simplify the LastUpdatedOrderedDict example recipe (GH-13296)

wimglenn · rhettinger · commit 1a10a6b980db · 2019-05-13T18:10:13.000-07:00
diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst
@@ -1141,7 +1141,7 @@ original insertion position is changed and moved to the end::
 
         def __setitem__(self, key, value):
             super().__setitem__(key, value)
-            super().move_to_end(key)
+            self.move_to_end(key)
 
 An :class:`OrderedDict` would also be useful for implementing
 variants of :func:`functools.lru_cache`::
