Add do in 2nd test for consistency

[OlegAlexander]

Hello and thank you for creating hspec!

As a new user of hspec, I noticed that the second example test doesn't have a do at the end. I know the do isn't necessary there, but it's also not necessary at the end of any of the tests. Therefore, I propose to make things consistent by adding a do at the end of the second test.

Thank you.