Fix whitespace and tabs

Remove extra whitespace and tabs as noticed by openstack-doc-test
--check-niceness.

Change-Id: I6f71b1141fda116cb432d2525d46e9a12ec810bc

v1/src/openstack-blockstorage-devguide.xml

@@ -718,7 +718,7 @@ format="SVG" scale="60"/>
 GET /v1/volumes
 Content-Type: application/json
 Accept: application/json
-	      </literallayout>
+              </literallayout>
           <programlisting language="json">
           <xi:include href="samples/volume_create_request.json" parse="text"/>
         </programlisting>
@@ -758,7 +758,7 @@ Accept: application/json
           <literallayout class="monospaced">
 GET /v1/volumes
 Accept: application/json
-	                </literallayout>
+                        </literallayout>
         </example>
         <example>
           <title>List Volumes: JSON Response</title>
@@ -870,7 +870,7 @@ Accept: application/json
 PUT /v1/volumes<parameter>2402b902-0b7a-458c-9c07-7435a826f794</parameter>
 Content-Type: application/json
 Accept: application/json
-	      </literallayout>
+              </literallayout>
           <programlisting language="json">
           <xi:include href="samples/volume_update_request.json" parse="text"/>
         </programlisting>
@@ -1196,7 +1196,7 @@ The response body will be empty with status code 202.
           <literallayout class="monospaced">
 GET /v1/types
 Accept: application/json
-	     </literallayout>
+             </literallayout>
         </example>
         <example>
           <title>List Volume Types: JSON Response</title>

v1/src/samples/os-volume-1.wadl

@@ -56,7 +56,7 @@
                 </resource>
 
                 <resource id="snapshots" path="snapshots">
-		   <doc title="Snapshots"/>
+                   <doc title="Snapshots"/>
                     <method href="#createSnapshot" />
                     <method href="#getSnapshotsSimple" />
 

v2/src/openstack-blockstorage-devguide.xml

@@ -1048,7 +1048,7 @@ Accept: application/json</literallayout>
                 <td>&GET;</td>
                 <td>/backups</td>
                 <td>Lists backups defined in Block Storage that the
-                  tenant who submits the request can access. </td>
+                  tenant who submits the request can access.</td>
               </tr>
             </tbody>
           </informaltable>
@@ -1083,7 +1083,7 @@ Accept: application/json</literallayout>
                 <td>/backups/details</td>
                 <td>Lists detailed information for backups defined in
                   Block Storage that the tenant who submits the
-                  request can access. </td>
+                  request can access.</td>
               </tr>
             </tbody>
           </informaltable>
@@ -1117,7 +1117,7 @@ Accept: application/json</literallayout>
                 <td>&GET;</td>
                 <td>/backups/<parameter>backup-id</parameter></td>
                 <td>Lists detailed information for a specified backup
-                  ID. </td>
+                  ID.</td>
               </tr>
             </tbody>
           </informaltable>

v2/src/samples/os-volume-1.wadl

@@ -57,7 +57,7 @@
                 </resource>
 
                 <resource id="snapshots" path="snapshots">
-		   <doc title="Snapshots"/>
+                   <doc title="Snapshots"/>
                     <method href="#createSnapshot" />
                     <method href="#getSnapshotsSimple" />