Link to js-sys is broken

The link to js-sys points to: https://github.com/rustwasm/js-sys

I think the actual repo is here: https://github.com/rustwasm/wasm-bindgen/tree/master/crates/js-sys

There isn't much info on that page, so maybe you want the link to go somewhere else?
