Man pages matching name net::twitter::manual::migratingtov1_1 in section 3pm:

Net::Twitter::Manual::MigratingToV1_1.3pm.en	debian 10 / libnet-twitter-perl
Net::Twitter::Manual::MigratingToV1_1.3pm.en	debian 11 / libnet-twitter-perl
Net::Twitter::Manual::MigratingToV1_1.3pm.en	debian 12 / libnet-twitter-perl