pgsql: Fix typo in header comment for set_operation_ordered_results_use

Fix typo in header comment for set_operation_ordered_results_useful Reported-by: Richard Guo Discussion: https://postgr.es/m/cambws492vmy3xnjdzrtqthfftk6hvedwhreqh7exggf_h5j...@mail.gmail.com Branch -- master Details --- https://git.postgresql.org/pg/commitdiff/b6612aedc53a6bf069eba5e35

pgsql: Fix typo in header comment

Fix typo in header comment Commit 4c04be9b0 accidentally left off the _id portion of the function name in the header comment. Author: Junwang Zhao Discussion: https://postgr.es/m/CAEG8a3LP+ytnAXSzR=yiEaQrde+iCybMHsuPn9n=un3puv_...@mail.gmail.com Branch -- master Details --- https://gi