bug: MSG-BOOK not found (404)

[merklefruit]

https://chainbound.github.io/msg-rs/

the docs website is broken :(

Last CI run in november failed with this error: https://github.com/chainbound/msg-rs/actions/runs/19704290546/job/56447873133

[0ex-d]

Just seeing this as I wanted to check docs on something, likely related to this CI breaks for newer builds.
I'll run locally and investigate.