Add a couple of scenarios to document After hooks

@willbryant I did this to try and reproduce the error you mentioned in
https://github.com/cucumber/cucumber/commit/1ac1f8abb473f9fca52eeb8534880dda12f7e608#commitcomment-7695454
but it's passing.

I guess there must be something particular about your scenario that's
causing it. Can you help me make a test case to reproduce the problem?
I had trouble when I had undefined steps, so I hacked it