Fix order in pattern match extraction exercises

[geoffreyyip]

In the last two exercises, the Employee constructor accepts arguments in the order of (firstName, middleName, lastName) while the unapply method accepts arguments in the order of (lastName, middleName, firstName).

[geoffreyyip]

I'm guessing the checks failed because I'd need to update a test to make it work. Where would I need make updates (if you're okay with the change)?