[libc-commits] [clang] [clang-tools-extra] [compiler-rt] [flang] [libc] [libcxx] [llvm] [mlir] [polly] [NFC] Fix "is is" typos (PR #206288)

[Renato Golin via libc-commits]

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

I'm baffled by how often this shows all over the place.

LGTM from the MLIR side. Thanks!

https://github.com/llvm/llvm-project/pull/206288