Avoid obscure jargon "hash"

[erights]

https://github.com/airbnb/javascript#events--hash says

pass a hash instead of a raw value

This use of "hash" is obscure jargon. Use "object literal".

[ljharb]

It's not that obscure; former PHP and Ruby devs use the term colloquially to mean anything with simple key-value lookup, like a JS object.

That said, this is a good change.