[WebUI] Fix rest of CSS style nits in misc. dirs so I can turn on CSS checker.

chrome/browser/resources/sync_promo/sync_promo.css

Index: chrome/browser/resources/sync_promo/sync_promo.css
diff --git a/chrome/browser/resources/sync_promo/sync_promo.css b/chrome/browser/resources/sync_promo/sync_promo.css
index 3c88029d18d58a8d554723a108ac5bb8a5899c4f..8984aaae31524c5d05d90748b1b8a9146af1a2d6 100644
--- a/chrome/browser/resources/sync_promo/sync_promo.css
+++ b/chrome/browser/resources/sync_promo/sync_promo.css
@@ -1,14 +1,14 @@
 /* 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. */
 
 html {
   font-family: segoe ui, arial, helvetica, sans-serif;
   font-size: 13px;
 }
 
-html, body {
+html,
+body {
   margin: 0;
   min-height: 100%;
   min-width: 100%;