doc: fix indent level

In openstackdocstheme, a vertical line is shown for a quote block.
Unnecessary leading spaces or wrong indent level causes unexpected
vertical line at the left side. This commit ajust the indent levels.

Change-Id: I81323f4ebbac1e7d502d15c33b0cb7aa95f5fc52

CONTRIBUTING.rst

@@ -1,16 +1,13 @@
 If you would like to contribute to the development of OpenStack,
 you must follow the steps in this page:
-
-   http://docs.openstack.org/infra/manual/developers.html
+http://docs.openstack.org/infra/manual/developers.html
 
 Once those steps have been completed, changes to OpenStack
 should be submitted for review via the Gerrit tool, following
 the workflow documented at:
-
-   http://docs.openstack.org/infra/manual/developers.html#development-workflow
+http://docs.openstack.org/infra/manual/developers.html#development-workflow
 
 Pull requests submitted through GitHub will be ignored.
 
 Bugs should be filed on Launchpad, not GitHub:
-
-   https://bugs.launchpad.net/networking-ovn
+https://bugs.launchpad.net/networking-ovn

doc/source/admin/faq.rst

@@ -42,8 +42,7 @@ active/active HA mode.
 OVN also makes use of ovsdb-server for the OVN northbound and southbound
 databases.  ovsdb-server supports active/passive HA using replication.
 For more information, see:
-
-    https://github.com/openvswitch/ovs/blob/master/Documentation/OVSDB-replication.md
+https://github.com/openvswitch/ovs/blob/master/Documentation/OVSDB-replication.md
 
 A typical deployment would use something like Pacemaker to manage the
 active/passive HA process.  Clients would be pointed at a virtual IP

doc/source/admin/refarch/routers.rst

@@ -46,15 +46,15 @@ creating a router.
 #. The OVN mechanism driver translates the router into a logical
    router object in the OVN northbound database.
 
-  .. code-block:: console
-
-     _uuid               : 1c2e340d-dac9-496b-9e86-1065f9dab752
-     default_gw          : []
-     enabled             : []
-     external_ids        : {"neutron:router_name"="router"}
-     name                : "neutron-a24fd760-1a99-4eec-9f02-24bb284ff708"
-     ports               : []
-     static_routes       : []
+   .. code-block:: console
+
+      _uuid               : 1c2e340d-dac9-496b-9e86-1065f9dab752
+      default_gw          : []
+      enabled             : []
+      external_ids        : {"neutron:router_name"="router"}
+      name                : "neutron-a24fd760-1a99-4eec-9f02-24bb284ff708"
+      ports               : []
+      static_routes       : []
 
 #. The OVN northbound service translates this object into logical flows
    and datapath bindings in the OVN southbound database.

doc/source/install/index.rst

@@ -153,14 +153,14 @@ primary node. See the :ref:`faq` for more information.
         extension_drivers = port_security
         overlay_ip_version = 4
 
-    .. note::
+     .. note::
 
-       To enable VLAN self-service networks, add ``vlan`` to the
-       ``tenant_network_types`` option. The first network type
-       in the list becomes the default self-service network type.
+        To enable VLAN self-service networks, add ``vlan`` to the
+        ``tenant_network_types`` option. The first network type
+        in the list becomes the default self-service network type.
 
-       To use IPv6 for all overlay (tunnel) network endpoints,
-       set the ``overlay_ip_version`` option to ``6``.
+        To use IPv6 for all overlay (tunnel) network endpoints,
+        set the ``overlay_ip_version`` option to ``6``.
 
    * Configure the Geneve ID range and maximum header size. The IP version
      overhead (20 bytes for IPv4 (default) or 40 bytes for IPv6) is added