[3.10] gh-101390: Fix docs for imporlib.util.LazyLoader.factory to properly call it a class method (GH-101391) (GH-101814)

gh-101390: Fix docs for `imporlib.util.LazyLoader.factory` to properly call it a class method (GH-101391)
(cherry picked from commit 17143e2)

Co-authored-by: busywhitespace <busywhitespace@tuta.io>

Author: miss-islington

Doc/library/importlib.rst

@@ -1722,7 +1722,7 @@ an :term:`importer`.
 
    .. classmethod:: factory(loader)
 
-      A static method which returns a callable that creates a lazy loader. This
+      A class method which returns a callable that creates a lazy loader. This
       is meant to be used in situations where the loader is passed by class
       instead of by instance.
       ::