ko: ofproto_lib: Fix the module name of Ryu
ko: ofproto_lib: Fix the module name of Ryu

(from commit a890d2f405b94493d68adf6ece55ab3e06da6466)

iwaseyusuke/ryu-book,osrg/ryu-book,iwaseyusuke/ryu-book,osrg/ryu-book