Fix url to core-mentorship mailing list (GH-11775)

(cherry picked from commit e9bc4172d18db9c182d8e04dd7b033097a994c06)

Co-authored-by: Mariatta <Mariatta@users.noreply.github.com>
diff --git a/Doc/bugs.rst b/Doc/bugs.rst
index 3206a45..c449ba2 100644
--- a/Doc/bugs.rst
+++ b/Doc/bugs.rst
@@ -89,4 +89,4 @@
 
 .. _Documentation bugs: https://bugs.python.org/issue?@filter=status&@filter=components&components=4&status=1&@columns=id,activity,title,status&@sort=-activity
 .. _Python Developer's Guide: https://devguide.python.org/
-.. _core-mentorship mailing list: https://mail.python.org/mailman/listinfo/core-mentorship/
+.. _core-mentorship mailing list: https://mail.python.org/mailman3/lists/core-mentorship.python.org/