[llvm] [MachineOutliner][NFC] Refactor (PR #105398)

[Kyungwoo Lee via llvm-commits]

kyulee-com wrote:

> In multiple places there is typo: `MinRepeates` -> `MinRepeats`?

Thanks for the catch! I blindly copied & pasted it from the prior suggestion.

https://github.com/llvm/llvm-project/pull/105398