[Misc][Docs] fix the comments of KV_T and CACHE_T in CALL_RESHAPE_AND_CACHE_XX macros

[yangsijia-serena]

Perhaps I misunderstood something, but I currently think that the comments of KV_T and CACHE_T in the CALL_RESHAPE_AND_CACHE_XX macros are swapped. If my understanding is correct, this PR will fix them.

Please help to review~ Thanks! cc @comaniac @Yard1 @LucasWilkinson

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[yangsijia-serena]

Hi @LucasWilkinson, just a gentle ping on this. If I misunderstood anything, please feel free to point it out and close this PR. Thank you!

[comaniac]

DCO is not a merge blocker, but the failed tests are. We should be able to force merge this PR given it only changes the comments.