doc: PG 16 relnotes: clarify "relation" segsize mention

Bruce Momjian <bruce@momjian.us>

Commit: e391939b76f941544fdb512b147950b71e8ee358
Author: Bruce Momjian <bruce@momjian.us>
Date: 2023-09-26T16:08:49Z
Releases: 16.1
doc:  PG 16 relnotes:  clarify "relation" segsize mention

Reported-by: harukat@sraoss.co.jp

Discussion: https://postgr.es/m/18124-d363fa4873e176d6@postgresql.org

Backpatch-through: 16 only

Files

PathChange+/−
doc/src/sgml/release-16.sgml modified +2 −2

Documentation touched