[clang-tools-extra] [clang-tidy] Proofread Contributing.rst (PR #149831)

[Kazu Hirata via cfe-commits]

kazutakahirata wrote:

> > > I'm not sure on the false positive
> > 
> > 
> > It's an adjective in this case: false-positive **rate**, so I believe it's correct, even though English is not my native language. ChatGPT also claims it's correct
> 
> Adjective seems legit, but e.g. [Wikipedia](https://en.wikipedia.org/wiki/False_positives_and_false_negatives) use plain `false positive rate`. I don't have a strong opinion on this, as I'm not a native speaker.

Yes, I realize the "false positive rate" vs "false-positive rate" is a close call although Gemini seems to like the latter better when I ask it.

Thanks for the review!


https://github.com/llvm/llvm-project/pull/149831