Update MainWindow.xaml

Author: yanjinhuagood

src/WPFDevelopers.Samples.Shared/ExampleViews/MainWindow.xaml

@@ -66,7 +66,6 @@
             <Border
                 Margin="0,0,5,0"
                 Background="{DynamicResource WD.BackgroundSolidColorBrush}"
-                CornerRadius="4,0,0,4"
                 Effect="{StaticResource WD.NormalShadowDepth}">
                 <wd:NavigateMenu x:Name="NavigateMenu" ItemsSource="{Binding NavigateMenuModelList}">
                     <i:Interaction.Triggers>
@@ -86,7 +85,6 @@
                 Grid.Column="2"
                 Margin="5,0,0,0"
                 Background="{DynamicResource WD.BackgroundSolidColorBrush}"
-                CornerRadius="4"
                 Effect="{StaticResource WD.NormalShadowDepth}">
                 <ContentControl Content="{Binding ControlPanel}" />
             </Border>