[Checkins] [zopefoundation/Zope] afc0a7: Improve formatting (#519)

[Jürgen Gmach]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/Zope
  Commit: afc0a7322dca245aaf122d33c6b94bf4fdc80fb3
      https://github.com/zopefoundation/Zope/commit/afc0a7322dca245aaf122d33c6b94bf4fdc80fb3
  Author: Jürgen Gmach <juergen.gmach at googlemail.com>
  Date:   2019-02-20 (Wed, 20 Feb 2019)

  Changed paths:
    M docs/zdgbook/ObjectPublishing.rst

  Log Message:
  -----------
  Improve formatting (#519)

Also:
- fix minor grammar error
- improve docstrings in example code
- prefer "subobject" over "sub-object"

modified:   docs/zdgbook/ObjectPublishing.rst