Typo: Missing "or" ?

[azaroth42]

I think there should be an "or" between "IRI" and "null" at the end of section 1.3, immediately above:
https://pr-preview.s3.amazonaws.com/w3c/json-ld-syntax/pull/58.html#typographical-conventions

[gkellogg]

Fixed in 7ac01d2.