Fix lib name and copyright date

Author: jcollins-g

test/dartdoc_integration_test.dart

@@ -1,8 +1,8 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-library dartdoc.dartdoc_test;
+library dartdoc.dartdoc_integration_test;
 
 import 'dart:async';
 import 'dart:io';