polish notification example code.

samples/ControlCatalog/MainWindow.xaml

@@ -7,7 +7,7 @@
         xmlns:v="clr-namespace:ControlCatalog.Views"
         x:Class="ControlCatalog.MainWindow" 
         LocalNotificationManager="{Binding NotificationManager, Mode=OneWayToSource}" 
-        NotificationArea.Position="BottomRight"
+        NotificationArea.Position="TopRight"
         NotificationArea.MaxItems="3">
     <Window.DataTemplates>
         <DataTemplate DataType="vm:NotificationViewModel">

samples/ControlCatalog/ViewModels/MainWindowViewModel.cs

@@ -24,6 +24,9 @@ namespace ControlCatalog.ViewModels
                 await Task.Delay(2500);
                 NotificationManager.Show(new NotificationContent { Title = "Title", Message = "Test4", Type = NotificationType.Success });
 
+                await Task.Delay(2500);
+                NotificationManager.Show(new NotificationContent { Title = "Title", Message = "Test5", Type = NotificationType.Information });
+
                 await Task.Delay(500);
                 NotificationManager.Show("Test5");