Fixed formatting of license header.

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1705461 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 98ea693..0444a35 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,11 +1,23 @@
 <?xml version='1.0' encoding='UTF-8'?>
 
-<!-- Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed 
-  with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, 
-  Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License 
-  at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under 
-  the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License 
-  for the specific language governing permissions and limitations under the License. -->
+<!--
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing,
+software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, either express or implied.  See the License for the
+specific language governing permissions and limitations
+under the License.
+-->
 
 <project
   xmlns="http://maven.apache.org/POM/4.0.0"