Remove @r{} in manual's code comments
Remove @r{} in manual's code comments

(at least until the colorize script can cope with these)

dkochmanski/cffi,mcna/cffi,wesen/cffi,dkochmanski/cffi,akovalenko/cffi,mcna/cffi,akovalenko/cffi,dochang/cffi,attila-lendvai/cffi,cffi/cffi,akovalenko/cffi,kingcheez/cffi-cheez,marsijanin/cffi,dochang/cffi,marsijanin/cffi,dochang/cffi,marsijanin/cffi,kingcheez/cffi-cheez,wesen/cffi,dkochmanski/cffi,cffi/cffi,3b/cffi,3b/cffi,attila-lendvai/cffi,kingcheez/cffi-cheez,cffi/cffi,stassats/cffi,stassats/cffi,stassats/cffi,wesen/cffi,3b/cffi