Migrate Overview demo

Author: dxvladislavvolkov

apps/demos/Demos/Common/PopupAndNotificationsOverview/Angular/app/app.component.html

@@ -26,8 +26,8 @@
         contentTemplate="popoverContent"
         [width]="260"
       >
-        <dxo-position at="bottom" my="top" offset="0 2" collision="fit flip">
-        </dxo-position>
+        <dxo-popover-position at="bottom" my="top" offset="0 2" collision="fit flip">
+        </dxo-popover-position>
         <div *dxTemplate="let data of 'popoverContent'">
           <div class="agent-details">
             <img alt="{{ house.Agent.Name }}" src="{{ house.Agent.Picture }}" />