The Wrapping errors subheading suggests using "libraries" for handling error wrapping boilerplate but does not suggest any popular libraries that could help with that. The one example I can think of right now is thiserror, but including more examples would definitely be nice to give people several options.

Since, thiserror is so popular one could also consider giving a quick example showcasing how it does reduce the impl From and impl std::error::Error for boilerplate.