Apply review edits to cinder log file section

This patch applies the edits suggested by reviewers for the other
service log patches, specifically
https://review.openstack.org/#/c/76752/ and
https://review.openstack.org/#/c/76747/.

Change-Id: I7ffb66b4c5d1974b703a4f76e5759c6f786c91e3
Related-Bug: #1282882

doc/config-reference/block-storage/section_cinder-log-files.xml

@@ -3,12 +3,12 @@
     xmlns:xi="http://www.w3.org/2001/XInclude"
     xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0"
     xml:id="section_cinder-logs">
-    <title>Log files used by Block Storage Services</title>
+    <title>Log files used by Block Storage</title>
     <para>The corresponding log file of each Block Storage service
     is stored in the <filename>/var/log/cinder/</filename>
     directory of the host on which each service runs.</para>
     <table rules="all">
-    <caption>Log files used by Block Storage Services</caption>
+    <caption>Log files used by Block Storage services</caption>
     <col width="35%"/>
     <col width="35%"/>
     <col width="30%"/>
@@ -18,58 +18,57 @@
             Log file
             </td>
             <td>
-            Corresponding service/interface (for CentOS, Fedora,
+            Service/interface (for CentOS, Fedora, openSUSE, Red Hat
-            openSUSE, Red Hat Enterprise Linux, and SUSE Linux
+            Enterprise Linux, and SUSE Linux Enterprise)
-            Enterprise)
             </td>
             <td>
-            Corresponding service/interface (for Ubuntu and Debian)
+            Service/interface (for Ubuntu and Debian)
             </td>
         </tr>
         </thead>
         <tbody>
         <tr>
             <td>
-            api.log
+            <filename>api.log</filename>
             </td>
             <td>
-            openstack-cinder-api
+            <systemitem class="service">openstack-cinder-api</systemitem>
             </td>
             <td>
-            cinder-api
+            <systemitem class="service">cinder-api</systemitem>
             </td>
         </tr>
         <tr>
             <td>
-            cinder-manage.log
+            <filename>cinder-manage.log</filename>
             </td>
             <td>
-            cinder-manage
+            <systemitem class="service">cinder-manage</systemitem>
             </td>
             <td>
-            cinder-manage
+            <systemitem class="service">cinder-manage</systemitem>
             </td>
         </tr>
         <tr>
             <td>
-            scheduler.log
+            <filename>scheduler.log</filename>
             </td>
             <td>
-            openstack-cinder-scheduler
+            <systemitem class="service">openstack-cinder-scheduler</systemitem>
             </td>
             <td>
-            cinder-scheduler
+            <systemitem class="service">cinder-scheduler</systemitem>
             </td>
         </tr>
         <tr>
             <td>
-            volume.log
+            <filename>volume.log</filename>
             </td>
             <td>
-            openstack-cinder-volume
+            <systemitem class="service">openstack-cinder-volume</systemitem>
             </td>
             <td>
-            cinder-volume
+            <systemitem class="service">cinder-volume</systemitem>
             </td>
         </tr>
         </tbody>