Why there is no reference to the necessary .indexes prefix in the S3 Sink connector documentation?

While I was trying to setup the S3 Sink connector and tightening as much as possible the permissions on the S3 bucket and the prefix I wanted the connector to use, I came to realize that there is a non documented (at least I cannot find it here) need for a prefix named .indexes at the root of the bucket. Without that, the connector will just not work in my case.
Just wanted to open the discussion here about that prefix, thanks!

Hi Mauro,

Thanks for highlighting the docs gap. We have updated them, you can find it here.

Please let us know any feedback you should have.