website: remove technical info from 404 page

Signed-off-by: Oleksandr Redko <[email protected]>

Author: alexandear

website/layouts/404.html

@@ -2,6 +2,5 @@
 <div class="td-content">
   <h1>Not found</h1>
   <p>Oops! This page doesn't exist. Try going back to the <a href="{{ "" | relURL }}">home page</a>.</p>
-  <p>You can learn how to make a 404 page like this in <a href="https://gohugo.io/templates/404/">Custom 404 Pages</a>.</p>
 </div>
 {{- end }}