[xray] Fix GCS table prefixes (#2065)
[xray] Fix GCS table prefixes (#2065)

* Fix GCS table prefixes

* More explicit documentation

atumanov/ray,ray-project/ray,stephanie-wang/ray,richardliaw/ray,robertnishihara/ray,robertnishihara/ray,robertnishihara/ray,stephanie-wang/ray,pcmoritz/ray-1,robertnishihara/ray,robertnishihara/ray,ray-project/ray,atumanov/ray,atumanov/ray,ujvl/ray-ng,ujvl/ray-ng,stephanie-wang/ray,ray-project/ray,pcmoritz/ray-1,richardliaw/ray,richardliaw/ray,ray-project/ray,pcmoritz/ray-1,ray-project/ray,robertnishihara/ray,pcmoritz/ray-1,stephanie-wang/ray,robertnishihara/ray,stephanie-wang/ray,ujvl/ray-ng,atumanov/ray,atumanov/ray,pcmoritz/ray-1,atumanov/ray,richardliaw/ray,stephanie-wang/ray,stephanie-wang/ray,robertnishihara/ray,robertnishihara/ray,stephanie-wang/ray,stephanie-wang/ray,ujvl/ray-ng,atumanov/ray,pcmoritz/ray-1,pcmoritz/ray-1,ray-project/ray,richardliaw/ray,richardliaw/ray,ray-project/ray,pcmoritz/ray-1,richardliaw/ray,atumanov/ray,richardliaw/ray,ray-project/ray