Add placement as default project in index webpage

Change-Id: I101ade5368fbdf108906e89e1c3ba03a46cd6f35
diff --git a/doc/source/index.rst b/doc/source/index.rst
index 6c42a5b..9186f6d 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -114,8 +114,8 @@
 You now have a working DevStack! Congrats!
 
 Your devstack will have installed ``keystone``, ``glance``, ``nova``,
-``cinder``, ``neutron``, and ``horizon``. Floating IPs will be
-available, guests have access to the external world.
+``placement``, ``cinder``, ``neutron``, and ``horizon``. Floating IPs
+will be available, guests have access to the external world.
 
 You can access horizon to experience the web interface to
 OpenStack, and manage vms, networks, volumes, and images from