message: add heaadings to template
diff: @@ -302,7 +302,11 @@ button:hover{
  <div class='msg S'><h4>H4 Color Header S</h4>content</div>
  <!-- /SAMPLE -->
  <!-- SAMPLE -->
  - <h2>/info</h3><hr>
  + <h1>Heading 1</h1>
  + <h2>Heading 2</h2>
  + <h3>Heading 3</h3>
  + <h4>Heading 4</h4>
  + <h3>WIFI HEAD <small><em>(WIFI_OFF)</em></small></h3><hr>
  <dl>
  <dt>Chip ID</dt><dd>123456</dd>
  <dt>Flash Chip ID</dt><dd>1234556</dd>
  