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

[adcichowski]

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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.