[Checkins] [zopefoundation/Zope] 3ba3d0: Improve formatting

[Jürgen Gmach]

  Branch: refs/heads/revise_traversal_methods_section
  Home:   https://github.com/zopefoundation/Zope
  Commit: 3ba3d08334cec9d7c7ccb967856d2c66a77e4b5d
      https://github.com/zopefoundation/Zope/commit/3ba3d08334cec9d7c7ccb967856d2c66a77e4b5d
  Author: Jürgen Gmach <juergen.gmach at apis.de>
  Date:   2019-02-20 (Wed, 20 Feb 2019)

  Changed paths:
    M docs/zdgbook/ObjectPublishing.rst

  Log Message:
  -----------
  Improve formatting

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

modified:   docs/zdgbook/ObjectPublishing.rst