[Typo]: change info about startTransition, now can be used with async func

Summary

Documentation advises against using async functions inside startTransition. However, in the newest changelogs, that has changed, and we can now easily use async functions inside startTransition. Perhaps I misunderstood it.

Page

https://react.dev/reference/react/startTransition

Details

If you read the documentation on react-dev, you can find information about startTransition. However, when you check the changelog on the react GitHub, you will find information about adding an option to use async functions at.

開啟 react.dev 上的 startTransition 參考頁面，並將其中關於非同步函式的指南與 CHANGELOG-canary.md 中 2023 年 10 月 5 日的對應項目進行比較。確認文件是否已過時，然後更新頁面，使其指南與目前的行為和 changelog 一致；當關於非同步函式的建議準確無誤時，工作就完成了。