Update episode 02 Title

[amanmdesai]

https://hsf-training.github.io/hsf-training-cicd-github/02-enter-sandman/index.html

Current Title: Exit (light) Codes -- what is meant by 'light' here? The word is not used in the episode except in the title.

[klieret]

@michmx @enibigir Do you know more about this? I can't find anything online about it either (but mostly because it overlaps with other search queries)

[michmx]

I couldn't find anything. If no other input, I vote to remove "light" from the title.

[klieret]

Agreed!