title: html - links without http protocol
body: <p>Is there a reason we include the <code>http</code> / <code>https</code> protocol on the <code>href</code> attribute of links?</p>
  
  <p>Would it be fine to just leave it off:</p>
  
  <pre><code>&lt;a href="example.com"&gt;my site&lt;/a&gt;
  </code></pre>