[Checkins] [zopefoundation/zope.principalregistry] 15f7bf: Update badge URL for Travis

[Jürgen Gmach]

  Branch: refs/heads/all-repos_autofix_all-repos-sed
  Home:   https://github.com/zopefoundation/zope.principalregistry
  Commit: 15f7bf7502f0e6fa218cf7476ba5b21e4b9f5aaf
      https://github.com/zopefoundation/zope.principalregistry/commit/15f7bf7502f0e6fa218cf7476ba5b21e4b9f5aaf
  Author: Jürgen Gmach <juergen.gmach at googlemail.com>
  Date:   2020-10-28 (Wed, 28 Oct 2020)

  Changed paths:
    M README.rst

  Log Message:
  -----------
  Update badge URL for Travis

Committed via https://github.com/asottile/all-repos