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

[Erich Keane via llvm-commits]

https://github.com/erichkeane commented:

I'm OK with this, but we need to see how the RFC goes before we can accept it.

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