Simplify code

Author: michael-o

maven-plugin-tools-generators/src/main/java/org/apache/maven/tools/plugin/generator/PluginXdocGenerator.java

@@ -192,9 +192,7 @@ private void writeBody(MojoDescriptor mojoDescriptor, XMLWriter w) {
         w.writeMarkup(getString("pluginxdoc.mojodescriptor.fullname"));
         w.endElement(); // p
         w.startElement("p");
-        w.writeMarkup(mojoDescriptor.getPluginDescriptor().getGroupId() + ":"
-                + mojoDescriptor.getPluginDescriptor().getArtifactId() + ":"
-                + mojoDescriptor.getPluginDescriptor().getVersion() + ":" + mojoDescriptor.getGoal());
+        w.writeMarkup(mojoDescriptor.getPluginDescriptor().getId() + ":" + mojoDescriptor.getGoal());
         w.endElement(); // p
 
         String context = "goal " + mojoDescriptor.getGoal();