Error when restarting services with the way from 'install-guide' in RHEL/CentOS7

In 'install-guide.html' , the commands below:
   service ironic-api restart
   service ironic-conductor restart
are ways to restart services in Debian/Ubuntu and has errors in other linux release. In RHEL7/CentOS/Fedora 21, they have different ways to be restarted and different service names ( openstack-ironic-api and openstack-ironic-conductor ).

We should add the desciption of how to restart the ' ironic-api ' and ' ironic-conductor ' services in RHEL7/CentOS/Fedora 21.
Change the description as follow:
==================
Fedora/RHEL/CentOS:
  sudo systemctl restart openstack-ironic-api
  sudo systemctl restart openstack-ironic-conductor

Ubuntu:
  sudo service ironic-api restart
  sudo service ironic-conductor restart
===================

Also, there has other three places need to be modified as same.
1. service nova-scheduler restart
2. service nova-compute restart
3. service ironic-conductor restart

Page URL: http://docs.openstack.org/developer/ironic/deploy/install-guide.html