Update Hugging Face Hub documentation README and Endpoints (#527)
* Update HfApi in readme
* Update endpoints to include metrics and author parameter
* Include link to huggingface_hub, change urls
* Add period
Co-authored-by: Omar Sanseviero <osanseviero@users.noreply.github.com>
* Make changes based on suggestions
* Update endpoints table
* Fix styling
Co-authored-by: Omar Sanseviero <osanseviero@users.noreply.github.com>