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

(cherry picked from commit 5cbb84106efefd200933aa31e22abf39267d2557)

Co-authored-by: Himanshu Lakhara <himanshulakhara1947@gmail.com>
diff --git a/Doc/library/importlib.rst b/Doc/library/importlib.rst
index db75f69..f9387c0 100644
--- a/Doc/library/importlib.rst
+++ b/Doc/library/importlib.rst
@@ -1030,7 +1030,7 @@
 .. 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.