doc: update list of personal traits in CoC

https://github.com/rust-lang/rust-www/pull/288 landed in the Rust repo
so it seems like a good idea to just bring the updated list in.

We also received a request to do this in https://github.com/nodejs/inclusivity/issues/82
so this should resolve that.

Thanks to [@Charlotteis](https://github.com/Charlotteis

) for bringing
up the original issue.

Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Myles Borins <mborins@us.ibm.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/4801
Fixes: https://github.com/nodejs/inclusivity/issues/82