chore: address minor review nits (env example, indentation)

Signed-off-by: Mansi2007275 <mansi@example.com>

Author: Mansi2007275

react-frontend/.env.example

@@ -1,2 +1 @@
-# // REACT_APP_API_URL=http://localhost:5000
 VITE_REACT_APP_API_URL=http://localhost:5000

react-frontend/src/components/SearchBar.jsx

@@ -33,7 +33,7 @@ function SearchBar({ onSearchPerformed }) {
   const [lastSearchParams, setLastSearchParams] = useState(null);
 
 
-const BASE_URL = useMemo(
+  const BASE_URL = useMemo(
     () => normalizeApiBaseUrl(import.meta.env.VITE_REACT_APP_API_URL),
     []
   );