cleaning up something that looks like an incomplete tag otherwise

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@273591 13f79535-47bb-0310-9956-ffa450edef68

docs/manual/CoreTasks/conditions.html

@@ -163,7 +163,7 @@ of 400 or greater are viewed as invalid.</p>
   <tr>
     <td valign="top">url</td>
     <td valign="top">The full URL of the page to request. The web server must
-      return a status code of &lt;<tt>errorsBeginAt</tt></td>
+      return a status code below the value of <tt>errorsBeginAt</tt></td>
     <td align="center">Yes.</td>
   </tr>
   <tr>