suggest to use uv to run the generate client command

Author: AllenFang

frontend/README.md

@@ -80,7 +80,7 @@ But it would be only to clean them up, leaving them won't really have any effect
 * From the top level project directory, run the script:
 
 ```bash
-./scripts/generate-client.sh
+VIRTUAL_ENV=./backend/.venv uv run bash scripts/generate-client.sh
 ```
 
 * Commit the changes.