[FIX] Fix docs about chat.react endpoint, add parameter to endpoint (#693)
[FIX] Fix docs about chat.react endpoint, add parameter to endpoint (#693)

* Fix docs about chat.react endpoint, add parameter to endpoint

* Fix the explanation about chat.react ednpoint

RocketChat/Rocket.Chat.Docs,RocketChat/Rocket.Chat.Docs,RocketChat/Rocket.Chat.Docs,RocketChat/Rocket.Chat.Docs