Update the document to use kolla-ansible post-deploy

TrivialFix

Change-Id: Ia2568495df07c3ed3983594c99aac220d2146f99

doc/quickstart.rst

@@ -462,11 +462,17 @@ kolla_internal_address.
 
 Useful tools
 -------------
-If run with the post-deploy.yml, an openrc file is created as
-\/etc\/kolla\/admin-openrc.sh on the deploy node. Or view tools/openrc-example
-for an example of an openrc that may be used with the environment. The
-following command will initialize an environment with a glance image and
-neutron networks:
+After successful deployment of OpenStack, run the following command can create
+an openrc file \/etc\/kolla\/admin-openrc.sh on the deploy node. Or view
+tools/openrc-example for an example of an openrc that may be used with the
+environment.
+
+::
+
+    kolla-ansible post-deploy
+
+After the openrc file is created, use the following command to initialize an
+environment with a glance image and neutron networks:
 
 ::