doc: PG 16 relnotes, add links to doc sections

Bruce Momjian <bruce@momjian.us>

Commit: 11f4935490eb8597fcc0e3e71c2caf90e6154943
Author: Bruce Momjian <bruce@momjian.us>
Date: 2023-08-17T02:22:12Z
Releases: 16.0
doc:  PG 16 relnotes, add links to doc sections

Backpatch-through: 16 only

Files

PathChange+/−
doc/src/sgml/release-16.sgml modified +176 −178

Documentation touched