Add some code-blocks to the docs

Add some basic highlighting for the docs

Change-Id: Ifa740856f3ef636bdf0f60f3b7d082c68062fe9b

Author: Steve Martinelli

doc/source/commands.rst

@@ -47,11 +47,13 @@ objects.  In badly formed English it is expressed as "(Take) object1
 
     <object-1> <action> <object-2>
 
-Examples::
+Examples:
 
-    group add user <group> <user>
+.. code-block:: bash
 
-    volume type list   # 'volume type' is a two-word single object
+    $ group add user <group> <user>
+
+    $ volume type list   # 'volume type' is a two-word single object
 
 
 Command Arguments and Options

doc/source/plugins.rst

@@ -14,7 +14,7 @@ Plugins are discovered by enumerating the entry points
 found under :py:mod:`openstack.cli.extension` and initializing the specified
 client module.
 
-::
+.. code-block:: ini
 
     [entry_points]
     openstack.cli.extension =
@@ -39,7 +39,7 @@ The client module must implement the following interface functions:
 OSC enumerates the plugin commands from the entry points in the usual manner
 defined for the API version:
 
-::
+.. code-block:: ini
 
     openstack.oscplugin.v1 =
         plugin_list = oscplugin.v1.plugin:ListPlugin
@@ -48,7 +48,7 @@ defined for the API version:
 Note that OSC defines the group name as :py:mod:`openstack.<api-name>.v<version>`
 so the version should not contain the leading 'v' character.
 
-::
+.. code-block:: python
 
     DEFAULT_OSCPLUGIN_API_VERSION = '1'