[Checkins] [zopefoundation/Zope] 1fd7cf: Better session documentation and link

[‮rekcäH nitraM‮]

  Branch: refs/heads/dwt-better-session-documentation
  Home:   https://github.com/zopefoundation/Zope
  Commit: 1fd7cf6d327fac44529162b093e7dfe516bde59b
      https://github.com/zopefoundation/Zope/commit/1fd7cf6d327fac44529162b093e7dfe516bde59b
  Author: ‮rekcäH nitraM‮ <mh at sntl-publishing.com>
  Date:   2020-08-21 (Fri, 21 Aug 2020)

  Changed paths:
    M docs/migrations/zope4/removed.rst

  Log Message:
  -----------
  Better session documentation and link

Update seasoning documentation hint and link the chapter on sessions