daemon start/stop: add warning about missing configuration

repmgr will attempt to construct appropriate commands to start
and stop repmgrd, but usually it's preferable for them to be explicitly
defined, particularly if repmgr is installed from packages.

doc/appendix-release-notes.sgml

@@ -21,6 +21,7 @@
     <para>
       &repmgr; 4.3 is a major release.
     </para>
+
     <sect2>
       <title>repmgr enhancements</title>
       <para>
@@ -65,7 +66,7 @@
           </listitem>
 
           <listitem>
-           <para>
+            <para>
               Add <option>--terse</option> option to <command><link linkend="repmgr-cluster-show">repmgr cluster show</link></command> (GitHub #521).
             </para>
             <para>
@@ -130,9 +131,7 @@
 
         </itemizedlist>
       </para>
-    </sect>2
-
-
+    </sect2>
 
   </sect1>