It’s been renamed recently. Maybe a few times. I think it’s rocq now. [1]

[1] https://rocq-prover.org/docs

Huh, I missed all of that. The linked discussion about the renaming from your link was a bit odd: https://discourse.rocq-prover.org/t/coq-community-survey-202...

It seemed to me from the survey that most people didn't want it changed or didn't care, but due to anglophone users they decided to change it anyway.