Fix a cross reference

Author: warsaw

peps/pep-0829.rst

@@ -111,7 +111,7 @@ This PEP proposes the following:
 #. *Future extension:* :ref:`apply global policy filter <future>` on sorted
    list of entry points.
 
-#. For each entry point, use :func:`pkg.resolve_name` to resolve the entry
+#. For each entry point, use :func:`pkgutil.resolve_name` to resolve the entry
    point into a callable.  Call the entry point with no arguments.
 
 For both ``.pth`` files and ``.start`` files, comment lines (i.e. lines