fix: adjust swr key to fetch expense detail

src/app/expense/detail/page.tsx

@@ -15,8 +15,8 @@ const ExpenseDetailPage = () => {
   const expenseId = searchParams.get('expenseId');
 
   const { data: expense, isLoading: isLoadingExpense } = useSWR(
-    expenseId,
-    (id: number) => ExpenseApi.getSingle(id)
+    ['expense-detail', expenseId],
+    ([_, id]) => ExpenseApi.getSingle(Number(id))
   );
 
   if (!expenseId) {