[llvm] [RFC][Docs] Clarify brace omission for single-line bodies (PR #195985)

[Nikita Popov via llvm-commits]

https://github.com/nikic requested changes to this pull request.

I don't believe that this clarification matches current practice.

The current policy explicitly allows omitting braces for *simple* single-statement bodies, where "simple" is not the same as "exactly one line" (as explained in some detail in further bullet points and examples).

https://github.com/llvm/llvm-project/pull/195985