bpo-27428: Fix WindowsRegistryFinder documentation to list appropriate ABC (GH-6061)

Doc/library/importlib.rst

@@ -1030,7 +1030,7 @@ find and load modules.
 .. class:: WindowsRegistryFinder
 
    :term:`Finder` for modules declared in the Windows registry.  This class
-   implements the :class:`importlib.abc.Finder` ABC.
+   implements the :class:`importlib.abc.MetaPathFinder` ABC.
 
    Only class methods are defined by this class to alleviate the need for
    instantiation.

Misc/NEWS.d/next/Documentation/2018-03-11-00-16-56.bpo-27428.B7A8FT.rst

+Update documentation to clarify that ``WindowsRegistryFinder`` implements
+``MetaPathFinder``. (Patch by Himanshu Lakhara)