update doc

src/Shared/HandyControl_Shared/Themes/Styles/Base/ToggleButtonBaseStyle.xaml

@@ -11,7 +11,6 @@
 
     <Style x:Key="ToggleButtonBaseStyle" BasedOn="{StaticResource ButtonBaseBaseStyle}" TargetType="ToggleButton">
         <Setter Property="controls:BorderElement.CornerRadius" Value="{StaticResource DefaultCornerRadius}"/>
-        <!--<Setter Property="BorderBrush" Value="{DynamicResource DarkMaskBrush}"/>-->
         <Setter Property="Template">
             <Setter.Value>
                 <ControlTemplate TargetType="ToggleButton">