优化 ToastService 中通知标题的格式问题

Author: Maklith

Core.Window/ToastService.cs

@@ -84,7 +84,7 @@ public void Show(string header, string text, NotificationType notificationType =
                         : new WindowNotificationManager(windowFromIntPtr);
                 windowToastManager.Position = NotificationPosition.BottomRight;
                 windowToastManager!.Show(
-                    new Notification($"Kitopia{header}", text),
+                    new Notification($"{header}", text),
                     showIcon: true,
                     showClose: true,
                     type: notificationType);