better text on 404 page

public/404.php

@@ -48,7 +48,7 @@ if (strpos($_SERVER['HTTP_HOST'], '.onion') !== false) {
         {
             action: 'type',
             strings: ["404 File not found"],
-            output: '<span class="gray">It looks like you want to access a file that\'s not available</span><br>&nbsp;',
+            output: '<span class="gray">It looks like you want to access a file that\'s not found</span><br>&nbsp;',
             postDelay: 1000
         },
         {