fix path in generated comment

pkg/analysis_server/lib/src/generated_protocol.dart

 // Copyright (c) 2014, 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.
 //
 // This file has been automatically generated.  Please do not edit it manually.
 // To regenerate the file, use the script
-// "pkg/analysis_server/spec/generate_files".
+// "pkg/analysis_server/tool/spec/generate_files".
 
 part of protocol;
 /**
  * server.getVersion params
  */
 class ServerGetVersionParams {
   Request toRequest(String id) {
     return new Request(id, "server.getVersion", null);
   }
 
@@ skipping 9997 matching lines @@
     return false;
   }
 
   @override
   int get hashCode {
     int hash = 0;
     hash = _JenkinsSmiHash.combine(hash, newName.hashCode);
     return _JenkinsSmiHash.finish(hash);
   }
 }