ES-975464 - Addressed the concerns and added the image

Author: SreemonPremkumarM

README.md

@@ -70,11 +70,12 @@ You can directly set the checkbox state by setting the [TreeViewNode.IsChecked](
                     <Grid>
                         <CheckBox x:Name="CheckBox" FocusVisualStyle="{x:Null}"
                                             IsChecked="{Binding IsChecked, Mode=TwoWay}" Content="{Binding Content}"/>
-
                     </Grid>
                 </DataTemplate>
             </syncfusion:SfTreeView.ItemTemplate>
         </syncfusion:SfTreeView>
     </Grid>
 </Window>
-```
+```
+
+![Showing TreeView with Checkboxes](TreeViewWithCheckBox.png)