Clarify that pg_trgm is used in example

Magnus Hagander <magnus@hagander.net>

Commit: e3019f631d1f2e21667ad05f903c52d904b9048c
Author: Magnus Hagander <magnus@hagander.net>
Date: 2020-01-09T09:48:22Z
Releases: 13.0
Clarify that pg_trgm is used in example

Reported-by: Octopus ZHANG
Author: Daniel Gustafsson

Files

PathChange+/−
doc/src/sgml/rules.sgml modified +2 −1

Documentation touched