[docs] [issue21902] Docstring of math.acosh, asinh, and atanh

[Mark Dickinson]

Mark Dickinson added the comment:

Roundup message copied from #21902 (bad issue number):

New changeset 36099a05d76a by Mark Dickinson in branch 'default':
Issue #21092: Merge from 3.4.
https://hg.python.org/cpython/rev/36099a05d76a

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21902>
_______________________________________