pgsql: doc: Use system-username instead of system-user

doc: Use system-username instead of system-user This inconsistency has been introduced in efb6f4a4f9b6. Reported-by: Julien Rouhaud Author: Bertrand Drouvot Discussion: https://postgr.es/m/zdmwux1hpiebk...@ip-10-97-1-34.eu-west-3.compute.internal Backpatch-through: 16 Branch -- master

pgsql: doc: Use system-username instead of system-user

doc: Use system-username instead of system-user This inconsistency has been introduced in efb6f4a4f9b6. Reported-by: Julien Rouhaud Author: Bertrand Drouvot Discussion: https://postgr.es/m/zdmwux1hpiebk...@ip-10-97-1-34.eu-west-3.compute.internal Backpatch-through: 16 Branch --