fix reverse proxy
After deploying https://github.com/huggingface/datasets-server/pull/2040 in staging, reverse-proxy component failed (I could not see the specific error but suspect it is because of an alias to a no longer existent location /storage).

fix reverse proxy: After deploying https://github.com/huggingface/datasets-server/pull/2040 in staging, reverse-proxy component failed (I could not see the specific error but suspect it is because of an alias to a no longer existent location /storage).
