Mistake about `vocab` flag in IRI Expansion

[helins]

The IRI expanding definition in 1.4.1 Algorithm Terms mentions that the vocab flag defaults to true whereas the intro to the actual algorithm description in 5.2.2 mentions that "the two flags" should default to false.

[gkellogg]

Not a mistake; the default for the IRI Expansion Algorithm is, indeed, false; the IRI expanding term is like a macro, and in this case defaults to true. That leads to the tersest use of this term.

[helins]

Thanks @gkellogg, naming was a bit confusing but it makes sense 👍