title: Create link in pdf with tcpdf
body: <p>How can I create a link with TCPDF?</p>
  
  <p>When using the <code>writeHTML()</code> function and passing my whole html content, TCPDF doesn't make my links clickable. They are blue and underlined but I cannot click them.</p>
  
  <p>Here is what I did.</p>
  
  <pre><code>$html = "&lt;a href='www.stackoverflow.com'&gt;stackoverflow.com&lt;/a&gt;";
  $tcpdf = new TCPDF();
  $tcpdf-&gt;writeHTML($html);
  $tcpdf-Output('output.pdf', 'F');
  </code></pre>