pkg/unittest: Removed references to expectAsync[Until]X in docs

pkg/unittest/lib/html_enhanced_config.dart

 // Copyright (c) 2013, 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.
 
-/**
- * A simple unit test library for running tests in a browser.
- *
- * Provides enhanced HTML output with collapsible group headers
- * and other at-a-glance information about the test results.
- */
+/// A simple unit test library for running tests in a browser.
+///
+/// Provides enhanced HTML output with collapsible group headers
+/// and other at-a-glance information about the test results.
 library unittest.html_enhanced_config;
 
 import 'dart:collection' show LinkedHashMap;
 import 'dart:convert';
 import 'dart:html';
 import 'unittest.dart';
 
 class HtmlEnhancedConfiguration extends SimpleConfiguration {
-  /** Whether this is run within dartium layout tests. */
+  /// Whether this is run within dartium layout tests.
   final bool _isLayoutTest;
   HtmlEnhancedConfiguration(this._isLayoutTest);
 
   var _onErrorSubscription = null;
   var _onMessageSubscription = null;
 
   void _installOnErrorHandler() {
     if (_onErrorSubscription == null) {
       // Listen for uncaught errors.
       _onErrorSubscription = window.onError.listen(
@@ skipping 380 matching lines @@
 
   ''';
 }
 
 void useHtmlEnhancedConfiguration([bool isLayoutTest = false]) {
   unittestConfiguration = isLayoutTest ? _singletonLayout : _singletonNotLayout;
 }
 
 final _singletonLayout = new HtmlEnhancedConfiguration(true);
 final _singletonNotLayout = new HtmlEnhancedConfiguration(false);