[clang-tools-extra] [clang-tidy][NFC] add qutation mark for C++ classes in warning message (PR #109068)

[Carlos Galvez via cfe-commits]

carlosgalvezp wrote:

> But the template mark is really hard to understand

I agree. Did you intend to remove that in this commit as well? I see it's still present.

https://github.com/llvm/llvm-project/pull/109068