Invalid escape sequence with domain names on Windows

[Kaaserne]

git_AuthorName gives an invalid escape when working with Windows domain name. Say my Windows domain name is XXX-PCN\Kaaserne then git_AuthorName would give:

const char* git_AuthorName() {
    return "XXX-PCN\Kaaserne";
}

But \K isn't a valid escape sequence, nor should it be interpreted as an escape sequence. So instead, \\K should be used