[flang-commits] [flang] [flang][docs] Fix spelling typo in FlangDriver.md (PR #219391)

[Aditya Mishra via flang-commits]

jane-street wrote:

@banach-space @kiranchandramohan — whenever you have a moment during your next bulk cleanup, could you take a quick look? Thank you!"

https://github.com/llvm/llvm-project/pull/219391