build(zensical): simplify page not found page text

Author: practicalli-johnny

overrides/404.html

@@ -13,10 +13,6 @@ <h3>
     Sorry we have arrived at a page that does not exist...
 </h3>
 
-<p>
-    Try use the Search bar at the top of the page
-</p>
-
 <p>
     Use the Search bar at the top of the page or left navigation to find the relevant content.
 </p>