[docs] [issue28635] Update What's New for 3.6

[Ned Deily]

Ned Deily added the comment:

There are now a few markup errors that the Docs buildbots are catching.  See, for example:

http://buildbot.python.org/all/builders/Docs%203.x/builds/2849

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue28635>
_______________________________________