Fix travis tuque warning

includes/tuque_wrapper.inc

@@ -254,7 +254,8 @@ class IslandoraFedoraObject extends FedoraObject {
     }
     catch (Exception $e) {
       if ($e instanceof DatastreamExistsException && variable_get('islandora_deprecation_return_false_when_datastream_exists', TRUE)) {
-        $message = format_string('The datastream @dsid already exists on the object: @pid. As of 7.x-1.10 the function signature for ingestDatastream will be changed from returning FALSE on failure to throwing an exception.', array(
+        $message = format_string('The datastream @dsid already exists on the object: @pid.
+          Returning FALSE on ingestDatastream() is deprecated in 7.x-1.10. See https://github.com/Islandora/islandora/pull/680/.', array(
           '@dsid' => $datastream->id,
           '@pid' => $object->id,
         ));