Typo in d.ts on rawEnv

[WilcoFiers]

Instead of rawEnv the allowed reporter type is raw-env. This is incorrect. More generally, it is a little bit of a problem that the types only allow pre-existing axe-core reporters, since someone could add their own. Perhaps this just needs to allow all strings? That's quite permissive though. I wouldn't mind some intermediate where you can use a reporter name if you give some indication its available, but if you haven't, only the defaults are available?