Man pages matching name mcd_vdump_data_register_text in section 3:

mcd_vdump_data_register_text.3.en	debian 10 / libminicoredumper-dev
mcd_vdump_data_register_text.3.en	debian 11 / libminicoredumper-dev
mcd_vdump_data_register_text.3.en	debian 12 / libminicoredumper-dev
mcd_vdump_data_register_text.3.en	debian 13 / libminicoredumper-dev