[llvm] [NFC][CodingStandard] Add additional example for if-else brace rule (PR #111733)

[Jay Foad via llvm-commits]

https://github.com/jayfoad approved this pull request.

Seems obviously fine to me for the reasons @joker-eph explained. I don't even think there's any need to wait a week or two.

https://github.com/llvm/llvm-project/pull/111733