[Checkins] [zopefoundation/RestrictedPython] c13c4f: Update docs/usage/api.rst

[Michael Howitz]

  Branch: refs/heads/issue-118
  Home:   https://github.com/zopefoundation/RestrictedPython
  Commit: c13c4f02f65b387c868b38cd1769def3dbb3ad64
      https://github.com/zopefoundation/RestrictedPython/commit/c13c4f02f65b387c868b38cd1769def3dbb3ad64
  Author: Michael Howitz <mh at gocept.com>
  Date:   2019-05-09 (Thu, 09 May 2019)

  Changed paths:
    M docs/usage/api.rst

  Log Message:
  -----------
  Update docs/usage/api.rst