Update registration settings

app/views/admin/settings/registrations/index.html.erb

@@ -1,9 +1,9 @@
 <%= render HeaderComponent.new(title: "Settings") %>
 
 <%= render MainWithSidenavComponent.new(sidenav_partial: 'shared/admin_sidenav_settings') do %>
-  <section>
-    <h3>Registrations</h3>
-    <%= form_for(Setting.new, url: admin_settings_services_path) do |f| %>
+  <%= form_for(Setting.new, url: admin_settings_registrations_path) do |f| %>
+    <section>
+      <h3>Registrations</h3>
       <% if @errors && @errors.any? %>
         <div>
           <ul>
@@ -14,7 +14,7 @@
         </div>
       <% end %>
 
-      <label>
+      <label class="block">
         <p class="font-bold mb-1">Reserved usernames</p>
         <p class="text-gray-500">
           These usernames cannot be registered as accounts:
@@ -22,10 +22,16 @@
         <%= f.text_area :reserved_usernames,
           value: Setting.reserved_usernames.join("\n"),
           class: "h-44 mb-2" %>
-        <p class="text-sm text-gray-500">
+        <p class="mb-0 text-sm text-gray-500">
           One username per line
         </p>
       </label>
-    <% end %>
-  </section>
+    </section>
+
+    <section>
+      <p class="mb-0 pt-6 border-t border-gray-200">
+        <%= f.submit 'Save', class: "btn-md btn-blue w-full md:w-auto" %>
+      </p>
+    </section>
+  <% end %>
 <% end %>