fix link to School of Music on Visitor page

visitor/index.shtml

@@ -168,7 +168,7 @@
 			<li><a href="http://tractormuseum.unl.edu/" title="Tractor Museum">Tractor Museum</a></li>
       <li><a href="http://visit.unl.edu/pershing/" title="go to the General John J. Pershing Timeline Display">General John J. Pershing Display</a></li>
 			<li><a href="http://www.unl.edu/rep/" title="Performance schedule, tickets, auditions, and contact information">Nebraska Repertory Theatre</a></li>
-			<li><a href="http://www.unl.edu/music/" title="UNL School of Music">School of Music</a></li>
+			<li><a href="http://arts.unl.edu/music/" title="UNL School of Music">School of Music</a></li>
                            </ul>
                         </ul>
                     </div>