[Checkins] [zopefoundation/Zope] cff9be: - RTD config tweaking [ci skip]

[Jens Vagelpohl]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/Zope
  Commit: cff9beec886205f491797bb9f72d186a547624cd
      https://github.com/zopefoundation/Zope/commit/cff9beec886205f491797bb9f72d186a547624cd
  Author: Jens Vagelpohl <jens at netz.ooo>
  Date:   2019-06-29 (Sat, 29 Jun 2019)

  Changed paths:
    M requirements-rtd.txt

  Log Message:
  -----------
  - RTD config tweaking [ci skip]