Fix some markup

Author: warsaw

Doc/whatsnew/3.12.rst

@@ -864,7 +864,7 @@ Removed
 * ``importlib.util.set_package`` has been removed.
   (Contributed by Brett Cannon in :gh:`65961`.)
 
-* The `imp` module has been removed.  (Contributed by Barry Warsaw in
+* The :mod:`imp` module has been removed.  (Contributed by Barry Warsaw in
   :gh:`98040`.)
 
 * Removed the ``suspicious`` rule from the documentation Makefile, and