fix wording of fileset example.

PR: 1239
Submitted by:	Daniel.Barclay@digitalfocus.com


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@269006 13f79535-47bb-0310-9956-ffa450edef68

docs/manual/using.html

@@ -317,7 +317,7 @@ defined.</p>
       &lt;pathelement location=&quot;classes&quot;/&gt;
     &lt;/classpath&gt;
 </pre>
-<p>Builds a path that holds the value of <code>${classpath}</code>,
+<p>This builds a path that holds the value of <code>${classpath}</code>,
 followed by all jar files in the <code>lib</code> directory, followed
 by the <code>classes</code> directory.</p>
 <p>If you want to use the same path-like structure for several tasks,