fix path in generated comment

pkg/analysis_server/tool/spec/codegen_tools.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.
 
 /**
  * Tools for code generation.
  */
 library codegen.tools;
 
 import 'dart:io';
@@ skipping 128 matching lines @@
  * in compliance with the License. You may obtain a copy of the License at
  * 
  * http://www.eclipse.org/legal/epl-v10.html
  * 
  * Unless required by applicable law or agreed to in writing, software distributed under the License
  * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
  * or implied. See the License for the specific language governing permissions and limitations under
  * the License.
  * 
  * 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".
+ * To regenerate the file, use the script "pkg/analysis_server/tool/spec/generate_files".
  */''';
     } else {
       header = '''
 // 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".
 ''';
     }
     writeln(header.trim());
   }
 }
 
 /**
  * State used by [CodeGenerator].
  */
 class _CodeGeneratorState {
@@ skipping 281 matching lines @@
     outputFile.createSync(recursive: true);
 
     // generate all of the files in the directory
     Map<String, FileContentsComputer> map = directoryContentsComputer();
     map.forEach((String file, FileContentsComputer fileContentsComputer) {
       File outputFile = new File(joinAll(posix.split(outputDirPath + file)));
       outputFile.writeAsStringSync(fileContentsComputer());
     });
   }
 }