Missed a ref to the old API in PEP 422

pep-0422.txt

@@ -148,7 +148,7 @@ function as a ``namespace`` keyword-only argument. If present, the value
 provided as the ``namespace`` argument will be called without arguments
 to create the result of ``type.__prepare__`` instead of using a freshly
 created dictionary instance. For example, the following will use
-the ordered dictionary created in the header as the class namespace::
+an ordered dictionary as the class namespace::
 
    class OrderedExample(namespace=collections.OrderedDict):
        def __init_class__(cls):