Fixing virtual firealarm device download modal issue

components/iot-plugins/virtual-fire-alarm-plugin/org.wso2.carbon.device.mgt.iot.virtualfirealarm.ui/src/main/resources/jaggeryapps/devicemgt/app/units/cdmf.unit.device.type.virtual_firealarm.type-view/public/js/download.js

@@ -16,9 +16,9 @@
  * under the License.
  */
 
-var modalPopup = ".wr-modalpopup";
-var modalPopupContainer = modalPopup + " .modalpopup-container";
-var modalPopupContent = modalPopup + " .modalpopup-content";
+var modalPopup = ".modal";
+var modalPopupContainer = modalPopup + " .modal-content";
+var modalPopupContent = modalPopup + " .modal-content";
 var body = "body";
 
 /*