add icon for number setting

management/lib/pages/server_settings_page.dart

@@ -71,8 +71,11 @@ class _ServerSettingsPageState extends State<ServerSettingsPage> {
         children: [
           ..._settings.keys.map(
             (String key) => CardListTile(
-              leading: Icon(
-                  key.contains('runtime') ? Icons.lock_clock_rounded : Icons.text_snippet_rounded),
+              leading: Icon(key.contains('runtime')
+                  ? Icons.lock_clock_rounded
+                  : key.contains('motd')
+                      ? Icons.text_snippet_rounded
+                      : Icons.pin_rounded),
               title: Text(settingTitles[key] ?? ''),
               onTap: () => _onTappedSetting(key, _settings[key]),
             ),