Man pages matching name fix_filename_case in section 3alleg4:

fix_filename_case.3alleg4.en	debian 10 / allegro4-doc
fix_filename_case.3alleg4.en	debian 11 / allegro4-doc
fix_filename_case.3alleg4.en	debian 12 / allegro4-doc
fix_filename_case.3alleg4.en	debian 13 / allegro4-doc