903039: added changes in sample code.

Author: indumathi-murali

blazor/maps/user-interactions.md

@@ -577,7 +577,7 @@ The shape is initially selected using the [MapsInitialShapeSelection](https://he
 <SfMaps>
     <MapsLayers>
         <MapsLayer ShapeData='new {dataOptions= "https://cdn.syncfusion.com/maps/map-data/world-map.json"}' TValue="string">
-            <MapsLayerSelectionSettings Enable="true" Fill="green">
+            <MapsLayerSelectionSettings Enable="true" Fill="green" EnableMultiSelect="true">
                 <MapsLayerSelectionBorder Color="white" Width="2"></MapsLayerSelectionBorder>
             </MapsLayerSelectionSettings>
             <MapsInitialShapeSelectionSettings>
@@ -1066,4 +1066,4 @@ To change the duration of the tooltips in mobile devices, you can use the [Durat
 
 ## See also
 
-* [Change center position on zooming](how-to/change-center-position-on-zooming)
+* [Change center position on zooming](how-to/change-center-position-on-zooming)