update comment for directory changes

git-svn-id: https://svn.apache.org/repos/asf/maven/maven-1/plugins/trunk@115572 13f79535-47bb-0310-9956-ffa450edef68

jar/plugin.jelly

@@ -43,7 +43,7 @@
       <ant:fail>
         Must remove the deploy plugin to use this version of the jar plugin.
         Please delete ${deployPlugin.artifactId}-${deployPlugin.currentVersion}.jar from
-        ${maven.plugin.dir} and ${maven.plugin.unpacked.dir} (if it exists)
+        ${maven.plugin.dir} and ${maven.plugin.user.dir} (if it exists)
       </ant:fail>
     </j:if>
   </j:if>