pgsql: doc: PG 16 relnotes, fix duplicate author and commit

doc: PG 16 relnotes, fix duplicate author and commit Reported-by: Masahiko Sawada Discussion: https://postgr.es/m/CAD21AoALE_joh=H-j5sdaAfDs=BXtCy6BQKYZBTi=neu8k0...@mail.gmail.com Branch -- master Details --- https://git.postgresql.org/pg/commitdiff/9e28b83ae6fabd8ae03eec7fa9533de018

pgsql: doc: PG 16 relnotes: adjust outer/full hash join parallelization

doc: PG 16 relnotes: adjust outer/full hash join parallelization Reported-by: David Rowley Discussion: https://postgr.es/m/caaphdvph4djrp+zjok67vcgbb_p9zn8qoo7qctt4oqguc_e...@mail.gmail.com Branch -- master Details --- https://git.postgresql.org/pg/commitdiff/5a64640966227eac582f2961b8