[rllib] Add -v and --torch flags to first page of docs (#7032)
[rllib] Add -v and --torch flags to first page of docs (#7032)

* add verbose doc

* torch

ray-project/ray,ray-project/ray,pcmoritz/ray-1,robertnishihara/ray,pcmoritz/ray-1,stephanie-wang/ray,stephanie-wang/ray,stephanie-wang/ray,robertnishihara/ray,richardliaw/ray,robertnishihara/ray,richardliaw/ray,robertnishihara/ray,stephanie-wang/ray,stephanie-wang/ray,ray-project/ray,pcmoritz/ray-1,pcmoritz/ray-1,pcmoritz/ray-1,robertnishihara/ray,robertnishihara/ray,richardliaw/ray,pcmoritz/ray-1,stephanie-wang/ray,ray-project/ray,ray-project/ray,robertnishihara/ray,ray-project/ray,ray-project/ray,robertnishihara/ray,pcmoritz/ray-1,stephanie-wang/ray,richardliaw/ray,richardliaw/ray,robertnishihara/ray,ray-project/ray,pcmoritz/ray-1,richardliaw/ray,richardliaw/ray,richardliaw/ray,stephanie-wang/ray,stephanie-wang/ray