Use absolute links

git-svn-id: https://svn.apache.org/repos/asf/maven/maven-1/plugins/trunk@371838 13f79535-47bb-0310-9956-ffa450edef68

developer-activity/xdocs/properties.xml

@@ -24,7 +24,7 @@
   </properties>
   <body>
     <section name="Maven Developer Activity Plug-in Settings">
-      <p><a href="../changelog/properties.html">See Changelog plugin properties</a></p>
+      <p>See Changelog plugin <a href="http://maven.apache.org/maven-1.x/reference/plugins/changelog/properties.html">properties</a></p>
     </section>
   </body>
 </document>