Man pages matching name app::kgb::client::relaymsg in section 3pm:

App::KGB::Client::RelayMsg.3pm.en	debian 10 / kgb-client
App::KGB::Client::RelayMsg.3pm.en	debian 11 / kgb-client
App::KGB::Client::RelayMsg.3pm.en	debian 12 / kgb-client