Cleanup: fix some CSS comment styles (especially copyrights)

chrome/browser/resources/chromeos/login/screen_tpm_error.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. */
 
 #tpm-error-message {
   min-width: 650px;
 }
 
 #oobe.tpm-error-message #step-logo {
   z-index: 1;
 }
 
 #tpm-error-message-controls {
   text-align: end;
 }