Change "Devstack" to "DevStack" in headings

This patch changes "Devstack" to "DevStack" and
"Openstack" to "OpenStack" in HEAT developer
documentation, so that their uses can be unified.

Closes-Bug: #1461456

Change-Id: Ie01b1a87205430672e56a41a51764b975090c1f9

doc/source/getting_started/on_devstack.rst

@@ -11,7 +11,7 @@
       License for the specific language governing permissions and limitations
       under the License.
 
-Heat and Devstack
+Heat and DevStack
 =================
 Heat is fully integrated into DevStack. This is a convenient way to try out or develop heat alongside the current development state of all the other OpenStack projects. Heat on DevStack works on both Ubuntu and Fedora.
 
@@ -49,7 +49,7 @@ Adding the following lines to your `localrc` file will enable the ceilometer ser
     enable_service ceilometer-acompute ceilometer-acentral ceilometer-collector ceilometer-api
     enable_service ceilometer-alarm-notifier ceilometer-alarm-evaluator
 
-Configure Devstack to enable OSprofiler
+Configure DevStack to enable OSprofiler
 ---------------------------------------
 
 Add the profiler notifier to your Ceilometer to your config::

doc/source/getting_started/on_fedora.rst

@@ -17,7 +17,7 @@ Getting Started With Heat on Fedora
 Installing OpenStack and Heat on Fedora
 ---------------------------------------
 
-Heat requires an Openstack release of Grizzly or newer, but bear in mind that Grizzly is EOL. The current stable release_ is, of course, recommended.
+Heat requires an OpenStack release of Grizzly or newer, but bear in mind that Grizzly is EOL. The current stable release_ is, of course, recommended.
 
 .. _release: https://wiki.openstack.org/wiki/Releases
 

doc/source/scale_deployment.rst

@@ -33,7 +33,7 @@ This guide, using a devstack installation of OpenStack, assumes that:
 
     1. You have configured devstack from `Single Machine Installation Guide
        <http://devstack.org/guides/single-machine.html>`_;
-    2. You have set up heat on devstack, as defined at `heat and Devstack
+    2. You have set up heat on devstack, as defined at `heat and DevStack
        <http://docs.openstack.org/developer/heat/getting_started/
        on_devstack.html>`_;
     3. You have installed `HAProxy <http://haproxy.1wt.eu>`_ on the devstack

doc/source/template_guide/contrib.rst

@@ -27,7 +27,7 @@ Rackspace Cloud Resource Types
 The resources in this module are for using Heat with the Rackspace
 Cloud. These resources either allow using Rackspace services that don't
 have equivalent services in OpenStack or account for differences between
-a generic Openstack deployment and the Rackspace Cloud.
+a generic OpenStack deployment and the Rackspace Cloud.
 
 Rackspace resources depend on the dev branch of
 `pyrax <https://github.com/rackspace/pyrax/tree/dev>`_ to work