doc: fix plurality typo on bgwriter doc sentence

Bruce Momjian <bruce@momjian.us>

Commit: 1673a667d4323f056e4cef715cf4c162190ce8e0
Author: Bruce Momjian <bruce@momjian.us>
Date: 2019-11-06T01:54:04Z
Releases: 9.6.16
doc:  fix plurality typo on bgwriter doc sentence

Reported-by: matthew.alton@gmail.com

Discussion: https://postgr.es/m/157204060717.1042.8194076510523669244@wrigleys.postgresql.org

Backpatch-through: 9.4

Files

PathChange+/−
doc/src/sgml/bgworker.sgml modified +1 −1

Documentation touched