title: woocommerce email template preview shows in plain text instead in html
body: <p>In <strong><code>WooCommerce</code></strong> > <strong><code>Settings</code></strong> > <strong><code>Emails</code></strong> there is a section <strong><code>"Email Template"</code></strong> with the following text:</p>
  
  <p>"This section lets you customize the WooCommerce emails. Click here to preview your email template."</p>
  
  <p>When I click on the link, preview shows in plain text, not HTML. </p>
  
  <p>Does anyone have an idea how can I make it show in html format?</p>
  
  <p>Basic server info and WP info:</p>
  
  <pre><code>centOs 7
  WC Version: 2.6.11
  WP version: 4.7
  Server Info: nginx/1.10.2
  PHP Version: 5.4.16
  </code></pre>
  
  <p>Thanks</p>