Fix user in EventStands table

frontend/src/modules/event/event-stands-columns.ts

@@ -16,7 +16,7 @@ export const eventStandColumns: TableColumn<EventStand>[] = [
   {
     key: "seller",
     label: "Seller",
-    render: (stand) => stand.seller?.name,
+    render: ({seller}) => seller?.email
   },
   {
     key: "actions",