Fix copyright.

git-svn-id: https://svn.apache.org/repos/asf/xerces/c/trunk@176066 13f79535-47bb-0310-9956-ffa450edef68

doc/faq-contributing.xml

 <?xml version="1.0" encoding = "iso-8859-1" standalone="no"?>
 <!--
- * Copyright 1999-2004 The Apache Software Foundation.
+ * Copyright 2004 The Apache Software Foundation.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.