link to simstudy package's website is broken

[Ian Hussey]

The link on https://debruine.github.io/faux/ to the simstudy's website is currently https://www.rdatagen.net/page/simstudy/ but this gives a 404 error. I think https://kgoldfeld.github.io/simstudy/ is the appropriate link.

[Lisa DeBruine]

Thanks!