Update docs and news entry

Author: marat

Doc/library/datetime.rst

@@ -2764,7 +2764,7 @@ Notes:
 (9)
    When used with the :meth:`~.datetime.strftime` method, the leading zero is optional
    for formats ``%d``, ``%m``, ``%H``, ``%I``, ``%M``, ``%S``, ``%j``, ``%U``,
-   ``%W``, ``%V`` and ``%y`` (except that on Apple platforms, ``%y`` still requires a leading zero).
+   ``%W``, ``%V`` and ``%y`` (except that on Apple platforms, ``%y`` always produces leading zero).
    Use the ``%-`` flag to produce non-zero-padded output (e.g. ``%-d``).
 
 (10)

Misc/NEWS.d/next/Library/2025-09-18-03-02-39.gh-issue-137165.7tJ6DS.rst

@@ -0,0 +1,3 @@
+Standardized non-zero-padded numeric formatting for dates and times in
+:func:`datetime.datetime.strftime` and :func:`datetime.date.strftime` across
+all platforms (e.g. ``"m:%-m d:%-d y:%-y"``).