Cleanup: fix some CSS comment styles (especially copyrights)

chrome/browser/resources/chromeos/login/gaia_password_changed.css

 /* Copyright 2015 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. */
 
 :host {
   display: block;
   position: relative;
 }
 
 iron-icon[icon='warning'] {
   -webkit-margin-end: 15px;
   -webkit-margin-start: 0;
   color: var(--google-yellow-500);
   margin-bottom: 0;
   margin-top: 0;
 }
 
 #navigation {
   color: white;
   left: 0;
   position: absolute;
   right: 0;
   top: 0;
   z-index: 1;
 }