[FIX] VITE config 수정

Author: ljo1010

frontend/vite.config.js

@@ -3,7 +3,7 @@ import react from "@vitejs/plugin-react";
 
 // https://vitejs.dev/config/
 export default defineConfig({
-  base: './',
+  base: '/',
   plugins: [react()],
   server: {
     proxy: {