Log Message:
py36-html-docs: Update to 3.6.8

Changes:
3.6.8
=====
Documentation
-------------
- bpo-35089: Remove mention of ``typing.io`` and ``typing.re``. Their types
  should be imported from ``typing`` directly.
- bpo-35038: Fix the documentation about an unexisting `f_restricted`
  attribute in the frame object. Patch by Stéphane Wirtel
- bpo-35035: Rename documentation for :mod:`email.utils` to
  ``email.utils.rst``.
- bpo-34967: Use app.add_object_type() instead of the deprecated Sphinx
  function app.description_unit()
- bpo-33594: Document ``getargspec``, ``from_function`` and ``from_builtin``
  as deprecated in their respective docstring, and include version since
  deprecation in DeprecationWarning message.
- bpo-32613: Update the faq/windows.html to use the py command from PEP 397
  instead of python.