fix rst syntax
fix rst syntax

vauxoo-tests/vauxoodocstheme,openstack/openstackdocstheme,annegentle/openstackdocstheme,openstack/openstackdocstheme,annegentle/openstackdocstheme,vauxoo-tests/vauxoodocstheme,openstack/openstackdocstheme,vauxoo-tests/vauxoodocstheme,openstack/openstackdocstheme