Removed H35 from 1.1.1 understanding doc (#3779)

Closes: #3619 

Technique H35 has been removed with #2490, but link was still available
in 1.1.1 Non-text Content Understanding doc.
Removed H35 link from Understanding doc.

Co-authored-by: Mike Gower <mikegower@gmail.com>

understanding/20/non-text-content.html

@@ -501,15 +501,10 @@ <h4>Situation B: If a short description can
 
                </li>
 
-               <li>
-
-                  <a href="../Techniques/html/H35" class="html"></a>
-
-               </li>
-
-               <li>
+               <li>                  
 
                   <a href="../Techniques/html/H37" class="html"></a>
+
 
                </li>