fix: 잘못된 코드 수정

Author: yewonJin

apps/frontend/src/app/main.tsx

@@ -19,6 +19,5 @@ createRoot(document.getElementById("root")!).render(
     <QueryClientProvider client={queryClient}>
       <RouterProvider router={router} />
     </QueryClientProvider>
-    ,
   </StrictMode>,
 );