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

[David Blaikie via llvm-commits]

dwblaikie wrote:

@pogo59 - you might find this interesting in terms of bitrotten tests, etc.

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