Docs: make the whatsnew-typing-py312 anchor point to things that were new in the typing module (#117904)

Author: AlexWaygood

Doc/whatsnew/3.12.rst

@@ -927,8 +927,6 @@ tempfile
 * :func:`tempfile.mkdtemp` now always returns an absolute path, even if the
   argument provided to the *dir* parameter is a relative path.
 
-.. _whatsnew-typing-py312:
-
 threading
 ---------
 
@@ -963,6 +961,8 @@ types
   :ref:`user-defined-generics` when subclassed. (Contributed by
   James Hilton-Balfe and Alex Waygood in :gh:`101827`.)
 
+.. _whatsnew-typing-py312:
+
 typing
 ------