Updated openstack/openstack
Project: openstack/oslo-incubator  3982595c5c9f08eb5c3a90cfaac60b2a022ff74d

Improving docstrings for policy API

The docstring for the policy API has some wrong examples and is
lacking examples of other types of checkings already available to
be used on policy languages. This patch corrects it.

Change-Id: I8d8ed04b10a28ca2ade5aaf95bc080c39472ae32