Make the 'PEP 446' string link to the PEP in whatsnew new feature description.
I also further qualified the cross reference link, since those are
global names.
diff --git a/Doc/whatsnew/3.4.rst b/Doc/whatsnew/3.4.rst
index 748fb73..e36fe73 100644
--- a/Doc/whatsnew/3.4.rst
+++ b/Doc/whatsnew/3.4.rst
@@ -101,7 +101,7 @@
New expected features for Python implementations:
-* :ref:`PEP 446: Make newly created file descriptors non-inheritable <pep-446>`.
+* :pep:`446`: :ref:`Make newly created file descriptors non-inheritable <whatsnew-pep-446>`.
* command line option for :ref:`isolated mode <using-on-misc-options>`,
(:issue:`16499`).
* :ref:`improvements <codec-handling-improvements>` in the handling of
@@ -170,7 +170,7 @@
Donald Stufft, Nick Coghlan, Martin von Löwis and Ned Deily.
-.. _pep-446:
+.. _whatsnew-pep-446:
PEP 446: Make newly created file descriptors non-inheritable
============================================================