Cleanup: fix some CSS comment styles (especially copyrights)

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

 /* Copyright 2014 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 {
   background-color: var(--google-green-500);
   color: white;
 }
 
 content::content strong {
   font-weight: 500;
 }
 
@@ skipping 80 matching lines @@
 }
 
 #controls content[select='paper-button']::content :not(:last-child) {
   margin-right: 1em;
 }
 
 :host(.split) #controls content[select='paper-button']::content :last-child {
   color: var(--google-green-500);
 }