I would like to contribute to second edition of Rust book.
https://doc.rust-lang.org/book/second-edition/ch01-03-hello-cargo.html in this page there seems to be a spelling mistake in this section.
I went to https://github.com/rust-lang/book and ran the command:
cargo install mdbook --vers "0.1.7"
but not sure if that is for the 2nd edition of the book.
What are my steps to submit a PR for the second edition of the book?