(TBR) fix internal option typo

pkg/analysis_server/lib/src/server/driver.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.
 
 library driver;
 
 import 'dart:async';
 import 'dart:io';
 import 'dart:math';
 
@@ skipping 93 matching lines @@
   /**
    * The name of the option used to specify if [print] should print to the
    * console instead of being intercepted.
    */
   static const String INTERNAL_PRINT_TO_CONSOLE = "internal-print-to-console";
 
   /**
    * The name of the option used to specify if [print] should print to the
    * console instead of being intercepted.
    */
-  static const String INTERNAL_DELAY_FREQUENCY = 'internal-delay-freqency';
+  static const String INTERNAL_DELAY_FREQUENCY = 'internal-delay-frequency';
 
   /**
    * The name of the option used to specify the port to which the server will
    * connect.
    */
   static const String PORT_OPTION = "port";
 
   /**
    * The path to the SDK.
    * TODO(paulberry): get rid of this once the 'analysis.updateSdks' request is
@@ skipping 271 matching lines @@
       uuidFile.parent.createSync(recursive: true);
       uuidFile.writeAsStringSync(uuid);
     } catch (exception, stackTrace) {
       service.logPriorityException(exception, stackTrace);
       // Slightly alter the uuid to indicate it was not persisted
       uuid = 'temp-$uuid';
     }
     return uuid;
   }
 }