Along with Rust 1.80.0 release, Rust by Example in Japanese was published at https://doc.rust-lang.org/rust-by-example/ja/ . As far as I know, this is the first case which translation is published under doc.rust-lang.org. This means the workflow of publishing translations is ready.
I share my PRs for this work. If you are interesting in document translation, these may be helpful.
- rust-by-example
https://github.com/rust-lang/rust-by-example/pull/1760 (add translation workflow)
https://github.com/rust-lang/rust-by-example/pull/1794 (add Japanese translation)
- book
https://github.com/rust-lang/book/pull/3950 (add translation workflow, not merged yet)