Add copyright information

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@275200 13f79535-47bb-0310-9956-ffa450edef68

docs/manual/tutorial-writing-tasks.html

@@ -751,6 +751,9 @@ Used Links:<br/>
 &nbsp;&nbsp;[6] <a href="http://nagoya.apache.org/bugzilla/show_bug.cgi?id=22570">http://nagoya.apache.org/bugzilla/show_bug.cgi?id=22570</a><br/>
 &nbsp;&nbsp;[7] <a href="tutorial-writing-tasks-src.zip">tutorial-writing-tasks-src.zip</a><br/>
 
+<hr>
+<p align="center">Copyright &copy; 2003 Apache Software Foundation. All rights
+Reserved.</p>
 
 </body>
 </html>