Prepending the url template configured for updating notifications with a '/'

components/device-mgt/org.wso2.carbon.device.mgt.api/src/main/java/org/wso2/carbon/device/mgt/jaxrs/service/api/NotificationManagementService.java

@@ -125,7 +125,7 @@ public interface NotificationManagementService {
                     int limit);
 
     @PUT
-    @Path("{id}/mark-checked")
+    @Path("/{id}/mark-checked")
     @ApiOperation(
             produces = MediaType.APPLICATION_JSON,
             httpMethod = "PUT",

components/device-mgt/org.wso2.carbon.device.mgt.api/src/main/java/org/wso2/carbon/device/mgt/jaxrs/service/impl/NotificationManagementServiceImpl.java

@@ -76,7 +76,7 @@ public class NotificationManagementServiceImpl implements NotificationManagement
     }
 
     @PUT
-    @Path("{id}/mark-checked")
+    @Path("/{id}/mark-checked")
     public Response updateNotificationStatus(
             @PathParam("id") int id) {
         String msg;