Update README.md

Author: tineshsf4652

README.md

@@ -146,9 +146,8 @@ Finally, we add the custom tooltip template to the Circular Chart by setting the
 **XAML**
  ```XAML
 <!-- XAML Circular Chart -->
-<chart:PieSeries ShowDataLabels="True" TooltipTemplate="{StaticResource tooltipTemplate}" 
+<chart:PieSeries TooltipTemplate="{StaticResource tooltipTemplate}" 
                  GroupTo="10"
-                 PaletteBrushes="{Binding CustomBrushes}"
                  ItemsSource="{Binding GroupToData}" XBindingPath="Name" YBindingPath="Value">
 </chart:PieSeries>
 
@@ -163,3 +162,5 @@ Finally, we add the custom tooltip template to the Circular Chart by setting the
 
 If you are facing a path too long exception when building this example project, close Visual Studio and rename the repository to a shorter name before building the project.
 
+For more details, refer to the KB on [how to bind the .NET MAUI Circular Chart tooltip to the values of the others categorys]()
+