clarify unstable_cache replacement with use cache

[abhishekmardiya]

There’s an inconsistency in the docs: unstable_cache has already been replaced by use cache, so I think the documentation should be updated accordingly.
I’d appreciate it if you could look into this, should that be the case. @icyJoseph

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[icyJoseph]

I think we just need to sync with the callout here? https://nextjs.org/docs/app/getting-started/caching-and-revalidating#unstable_cache

Good to know: unstable_cache is an experimental API. We recommend opting into Cache Components and replacing unstable_cache with the use cache directive. See the Cache Components documentation for more details.

[abhishekmardiya]

Yeah, I think that’s a good idea.