[Checkins] [zopefoundation/Zope] aff3e2: - installation instruction updates (fixes #920)

[Jens Vagelpohl]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/Zope
  Commit: aff3e21109bf7bf8960f6229d26c65b76476b95f
      https://github.com/zopefoundation/Zope/commit/aff3e21109bf7bf8960f6229d26c65b76476b95f
  Author: Jens Vagelpohl <jens at netz.ooo>
  Date:   2020-10-14 (Wed, 14 Oct 2020)

  Changed paths:
    M docs/INSTALL.rst

  Log Message:
  -----------
  - installation instruction updates (fixes #920)