Update README.md

README.md

@@ -43,5 +43,5 @@ pip install -U mlx-vlm
 ```
 
 ```bash
-python -m mlx_vlm.generate --model mlx-community/LightOnOCR-2-1B-4bit --max-tokens 100 --temperature 0.0 --prompt "Describe this image." --image <path_to_image>
+python -m mlx_vlm.generate --model mlx-community/LightOnOCR-2-1B-4bit --max-tokens 100 --temperature 0.0 --prompt "" --image <path_to_image>
 ```