[llvm] [llvm][llvm-cat] Fix typo in the Input file name option (PR #108294)

[Amr Hesham via llvm-commits]

AmrDeveloper wrote:

> This is my kind of change :)
> 
> Do you need me to merge this for you?

Thank you, I can merge

https://github.com/llvm/llvm-project/pull/108294