fix baseUri of the Caldav server

apps/calendar/caldav.php

@@ -25,7 +25,7 @@ $nodes = array(
 
 // Fire up server
 $server = new Sabre_DAV_Server($nodes);
-$server->setBaseUri(OC::$APPSROOT.'/apps/calendar/caldav.php');
+$server->setBaseUri(OC::$APPSWEBROOT.'/apps/calendar/caldav.php');
 // Add plugins
 $server->addPlugin(new Sabre_DAV_Auth_Plugin($authBackend,'ownCloud'));
 $server->addPlugin(new Sabre_CalDAV_Plugin());