Man pages matching name www::robotrules in section 3pm:

WWW::RobotRules.3pm.en	debian 10 / libwww-robotrules-perl
WWW::RobotRules.3pm.en	debian 11 / libwww-robotrules-perl
WWW::RobotRules.3pm.en	debian 12 / libwww-robotrules-perl