style(settings): increase spacing between title and icon

- Adjust spacing from AppSpacing.xs to AppSpacing.sm for better visual separation

Author: fulleni

lib/settings/view/settings_page.dart

@@ -65,7 +65,7 @@ class _SettingsViewState extends State<_SettingsView> {
           children: [
             Text(l10n.settings),
             const SizedBox(
-              width: AppSpacing.xs,
+              width: AppSpacing.sm,
             ), // Spacing between title and icon
             AboutIcon(
               dialogTitle: l10n.settings,