[compiler-rt] [llvm] [polly] [NFC] Fix spelling mistakes in comments 'compatiable' to 'compatible' (PR #185213)

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AndiB wrote:

I don't have commit access or the ability to assign a reviewer, could I please get a review or suggestions for additional reviewers 
@alexey-bataev (the format changes that the automated checker made me do, seem to have impacted your previous code changes, so I'm adding you :) feel free to defer to someone else though). 

https://github.com/llvm/llvm-project/pull/185213