Cleanup: fix some CSS comment styles (especially copyrights)

chrome/browser/resources/chromeos/sim_unlock.css

 /* Copyright (c) 2012 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
+ * found in the LICENSE file. */
 
 .error {
   color: red;
 }
 
 #pin-error-msg {
   height: 25px;
   margin: 5px auto 5px auto;
 }
 
@@ skipping 76 matching lines @@
 }
 
 .choose-pin-input-area {
   margin: 5px 5px 5px 5px;
   width: 125px;
 }
 
 #choose-pin-action-area {
   padding: 6px;
 }