Man pages matching name config::model::backend::augeas in section 3pm:

Config::Model::Backend::Augeas.3pm.en	debian 10 / libconfig-model-backend-augeas-perl
Config::Model::Backend::Augeas.3pm.en	debian 11 / libconfig-model-backend-augeas-perl
Config::Model::Backend::Augeas.3pm.en	debian 12 / libconfig-model-backend-augeas-perl