Documentation may enhanced on omitting parenthesis

[bhachauk]

Note : I don't know raising issue here is right or not. If i did wrong, redirect me to the right path.

omitting parenthesis only covers for the method println. As far my understanding keywords such as return, assert also work like methods. I feel that ommitting_paranthesis section can be enhanced with these uncovered area, which is very helpful for the users.

discussion from stackoverflow

Thanks,
Bhanuchander