Fixed headings for consistency in these topics:

openstack_dashboard.rst
openstack_environment-database.rst
openstack_environment-messaging.rst
openstack_identity-openrc.rst
openstack_image.rst
openstack_object_storage.rst

source/openstack_dashboard.rst

@@ -7,7 +7,7 @@ services. This dashboard enables interaction with the OpenStack Compute
 cloud controller via OpenStack APIs.
 
 Installation and configuration
-==============================
+------------------------------
 
 Please note that the dashboard relies on functional core services in
 `OpenStack MVP <openstack_installing_bundles.html>`__,

source/openstack_environment-database.rst

@@ -1,5 +1,5 @@
 Database
-~~~~~~~~
+########
 Most OpenStack services use an SQL database to store information. The
 database typically runs on the controller node. The procedures in this
 guide use MariaDB.
@@ -36,7 +36,7 @@ Install and configure the database server
     character-set-server = utf8
 
 Finalizing database installation
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+--------------------------------
 
 Complete the following steps to finalize database installation:
 

source/openstack_environment-messaging.rst

@@ -1,5 +1,5 @@
 Message queue
-~~~~~~~~~~~~~
+#############
 
 OpenStack uses a `message queue` to coordinate operations and
 status information among services. The message queue service typically
@@ -16,7 +16,7 @@ Install the message queue service
      # clr_bundle_add message-broker-rabbitmq
 
 Configuring the message broker service
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+--------------------------------------
 
 Complete the following steps to configure the message broker service:
 

source/openstack_identity-openrc.rst

@@ -1,5 +1,5 @@
 Create OpenStack client environment scripts
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+###########################################
 
 The previous section used a combination of environment variables and
 command options to interact with the Identity service via the

source/openstack_image.rst

@@ -24,15 +24,15 @@ systems to object-storage systems like OpenStack Object Storage.
    config-reference/content/
    ch_configuring-openstack-image-service.html>`__.
 
-Install and configure
-~~~~~~~~~~~~~~~~~~~~~
+Install and configure the Image Service
+---------------------------------------
 
 This section describes how to install and configure the Image service,
 code-named glance, on the controller node. For simplicity, this
 configuration stores images on the local file system.
 
 Prerequisites
--------------
+~~~~~~~~~~~~~
 
 Before you install and configure the Image service, you must
 create a database, service credentials, and API endpoints.
@@ -277,7 +277,7 @@ Finalize installation
     # systemctl start glance-api.service glance-registry.service
 
 Verify operation
-~~~~~~~~~~~~~~~~
+----------------
 
 Verify operation of the Image service using
 `CirrOS <http://launchpad.net/cirros>`__, a small

source/openstack_object_storage.rst

@@ -1,5 +1,5 @@
 OpenStack* object storage
-========================
+#########################
 
 Install and configure the controller node
 -----------------------------------------