[docs] [issue33828] Add versionchanged notes for string.Formatter

[Xiang Zhang]

Xiang Zhang <angwerzx at 126.com> added the comment:


New changeset fc8ea20c6f8571de96791bc5f7f2d693406024c7 by Xiang Zhang in branch '2.7':
[2.7] bpo-33828: Clarify auto-numbering is not available to string.Formatter. (GH-7668) (GH-7676)
https://github.com/python/cpython/commit/fc8ea20c6f8571de96791bc5f7f2d693406024c7


----------

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33828>
_______________________________________