[clang-tools-extra] [clang-tidy] use upper case letters for bool conversion suffix (PR #102831)

[Carlos Galvez via cfe-commits]

https://github.com/carlosgalvezp requested changes to this pull request.

There might be people who don't want uppercase suffix, so this will cause problems to them. This should be put into a configuration option instead.

https://github.com/llvm/llvm-project/pull/102831