[Checkins] [zopefoundation/zope.interface] 340853: Add more persistence examples.

[Jason Madden]

  Branch: refs/heads/doc_persistency_equality#218
  Home:   https://github.com/zopefoundation/zope.interface
  Commit: 34085388b34738c094b30a65c7d0abbcd05ee421
      https://github.com/zopefoundation/zope.interface/commit/34085388b34738c094b30a65c7d0abbcd05ee421
  Author: Jason Madden <jamadden at gmail.com>
  Date:   2020-10-23 (Fri, 23 Oct 2020)

  Changed paths:
    M docs/README.rst

  Log Message:
  -----------
  Add more persistence examples.