Fix empty arguments in the cheat sheet
What does this MR do?
While going through the Rails cheat sheet, I've noticed several cases when no example arguments were provided:
p = Project.find_by_full_path('')
u = User.find_by_username('')
It looks confusing to me, and I think it would be better to provide some kind of a sample username / project path / etc there.
This MRs fixes all cases with empty arguments (''
or ""
) on this page.