The issue suggests adapting the spellchecking script from the Rust book's CI (https://github.com/rust lang/book/blob/master/ci/spellcheck.sh). The contributor should fork the repository, create a similar script in the ci/ directory, and integrate it with the existing CI workflow. It may require installing a spellchecker like 'spellchecker cli' or 'aspell'. The maintainers have not provided further details in the comments, so the implementation should follow the book's example.
Spellchecking · rust-lang/rust-by-example#1264 | Good First Issue