NeedForSpeedTest.java methods are using snake_case

[AlvesJorge]

It seems odd, is there a reason for this?

As someone learning the java track It got me wondering for a second if test method names should be in snake_case or not, I'm guessing others have thought the same.

[kahgoh]

Looking at the Git history, I think it was just over looked when the exercise was added. I agree, it doesn't follow the usual Java convention of lower camel case. @AlvesJorge would you be happy open a PR to fix this?

[kahgoh]

Closing as fixed by #3030