Commit a2c84990bea7 accidentally used the link for pg_hba_file_rules
when linking to pg_ident_file_mappings. Backpatch to v16 where this
was introduced.
Author: Erik Wienhold
Discussion: https://postgr.es/m/qt5hvgvfi4qzlgml2dfssaut2t2x5nwf7b5l63fklr7fpxwm6g@hle3mtglpm4y
Backpatch-through: v16