Admonitions beta feature is inaccessible

[pboling]

Your profile claims your job is to make GitHub more accessible. Why is your Admonitions beta feature inaccessible?

The discussion isn't getting any shorter... and I don't have time to find all the very good points that have been made, as that's literally your job.

https://github.com/orgs/community/discussions/16925

[tlourey]

It would be nice to see this in place.