allow to add custom form completed message

app/views/personalization_settings/show.html.erb

@@ -10,7 +10,10 @@
     <p class="text-4xl font-bold mb-4 mt-8">Company Logo</p>
     <%= render 'logo_form' %>
     <p class="text-4xl font-bold mb-4 mt-8">Submission Form</p>
-    <%= render 'form_completed_button_form' %>
+    <div class="space-y-4">
+      <%= render 'form_completed_message_form' %>
+      <%= render 'form_completed_button_form' %>
+    </div>
     <%= render 'form_customization_settings' %>
   </div>
   <div class="w-0 md:w-52"></div>