Improve some formatting.

git-svn-id: svn://bind10.isc.org/svn/bind10/trunk@1494 e5f2f494-b856-4b98-b285-d166d9295462

src/bin/msgq/msgq.xml

@@ -47,9 +47,8 @@
       <command>msgq</command>
       <arg><option>-m <replaceable>number</replaceable></option></arg>
       <arg><option>-v</option></arg>
-      <arg choice='plain'>--msgq-port <replaceable>number</replaceable></arg>
-      <arg choice='plain'>--verbose </arg>
-<!-- TODO arg choice versus option? -->
+      <arg><option>--msgq-port <replaceable>number</replaceable></option></arg>
+      <arg><option>--verbose</option></arg>
     </cmdsynopsis>
   </refsynopsisdiv>