Use latest maven-sdocbook-plugin

doc/xdocs/reference.xml

@@ -45,7 +45,7 @@
 
           <tr>
             <td>
-              <a href="docbook/index-all.html">Reference Guide HTML Single Page</a>
+              <a href="docbook/acegi.html">Reference Guide HTML Single Page</a>
             </td>
             <td>
               The reference guide in a single html page.