Man pages matching name pg_config in section 1:

pg_config.1.en	debian 10 / libpq-dev
pg_config.1.zh_CN	debian 10 / manpages-zh
pg_config.1.zh_TW	debian 10 / manpages-zh
pg_config.1.en	debian 11 / libpq-dev
pg_config.1.zh_CN	debian 11 / manpages-zh
pg_config.1.zh_TW	debian 11 / manpages-zh
pg_config.1.en	debian 12 / libpq-dev
pg_config.1.zh_CN	debian 12 / manpages-zh
pg_config.1.zh_TW	debian 12 / manpages-zh