Change veiligheids to controle code

app/modules/vote/templates/vote/public/view.j2

@@ -63,7 +63,7 @@
         <form method="post">
             <div class="card mb-4">
                 <div class="card-body">
-                    <h5 class="card-title">Veiligheids code</h5>
+                    <h5 class="card-title">Controle code</h5>
                     <input type="text" class="form-control" name="security_code" placeholder="code" required>
                 </div>
             </div>