Update WDMessageBox.cs

Change the icon color after modifying the information

Author: yanjinhuagood

src/WPFDevelopers.Shared/Controls/MessageBox/WDMessageBox.cs

@@ -256,7 +256,7 @@ private void DisplayImage(MessageBoxImage image)
                 case MessageBoxImage.Information:
                     _geometry = (Geometry) Application.Current.TryFindResource("WD.WarningGeometry");
                     _solidColorBrush =
-                        (SolidColorBrush) Application.Current.TryFindResource("WD.SuccessSolidColorBrush");
+                        (SolidColorBrush) Application.Current.TryFindResource("WD.SuccessNormalBrush");
                     break;
                 case MessageBoxImage.Question:
                     _geometry = (Geometry) Application.Current.TryFindResource("WD.QuestionGeometry");