add an index recommended by Atlas
<img width="1098" alt="Capture d’écran 2023-11-14 à 11 54 53" src="https://github.com/huggingface/datasets-server/assets/1676121/a97093b9-26b9-4957-a53c-ef48d72f988f">

add an index recommended by Atlas: <img width="1098" alt="Capture d’écran 2023-11-14 à 11 54 53" src="https://github.com/huggingface/datasets-server/assets/1676121/a97093b9-26b9-4957-a53c-ef48d72f988f">
