change url param name to "subdomain"

src/pages/checkout/components/CheckoutButton.tsx

@@ -1,23 +1,23 @@
 import { Button, FormInstance } from "antd";
 import { selectCart } from "features/order/orderSlice";
+import { OrderType } from "pages/checkout/hooks/types.ts";
 import { useCallback, useMemo } from "react";
 import { useTranslation } from "react-i18next";
 import { useNavigate, useParams } from "react-router-dom";
 import { useAppSelector } from "redux/hooks";
 import styles from "../../address/address.module.css";
 import useOrder from "../hooks/useOrder";
-import { OrderType } from "pages/checkout/hooks/types.ts";
 
 export default function CheckoutButton({ form }: { form: FormInstance }) {
   const { t } = useTranslation();
   const { orderType } = useAppSelector(selectCart);
   const navigate = useNavigate();
   const { handleCreateOrder } = useOrder();
-  const { id } = useParams();
+  const { subdomain } = useParams();
 
   const handleSplitBillClick = useCallback(() => {
-    navigate(`/${id}/split-bill`);
-  }, [navigate, id]);
+    navigate(`/${subdomain}/split-bill`);
+  }, [navigate, subdomain]);
 
   const handlePlaceOrderClick = useCallback(async () => {
     try {