Fix clang-format git hook script
It should be --extensions "cpp,h,hpp,c"; previously, I naively tested that it didn't bother .json files, but I not if it'll actually trigger for e.g. a .h file...
It should be --extensions "cpp,h,hpp,c"; previously, I naively tested that it didn't bother .json files, but I not if it'll actually trigger for e.g. a .h file...