[Beta] - Can you add the concept of whether setState is async or not under useState documentation?

I think we all have seen a lot of blogs, StackOverflow questions, and different course authors explaining different things. So It's a request from React team to add some advance behind the scene explanation to this under
useState
Also If there is something already available on the Beta website then please share it under this thread.
Thank you
CC: @gaearon @sophiebits

從 issue 中連結的 useState beta 文件頁面開始，檢查其中是否已經說明狀態更新的時機或非同步行為。完成的標準是該頁面包含對此概念清楚、準確的說明，或連結到 useState 文件中現有的說明。