[clang] [clang-tools-extra] [flang] [llvm] [mlir] [polly] [test]: fix filecheck annotation typos (PR #91854)

[via llvm-commits]

klensy wrote:

> Ok, running https://gist.github.com/klensy/2a6cf62f228b676b73cb5b16a599b93b over current PR will give more hits, but with few FP, so be aware.

Funny, there already exist linter https://github.com/llvm/llvm-project/blob/d187005cad8c2cb7d44ba3dd6b01c5f0e4c14ae7/llvm/utils/filecheck_lint/filecheck_lint.py

https://github.com/llvm/llvm-project/pull/91854