Rework SQL/JSON documentation

This makes the documentation conform more closely the style of other
function sections.

Includes suggestions from Erik Rijkers, Alvaro Herrera, and Justin
Pryzby.

Discussion: https://postgr.es/m/CAKFQuwaq5Ny6d3nWbJo=QO4RmhSk9JD8zrkURLR-wWmB2Pkz7Q@mail.gmail.com
This commit is contained in:
Andrew Dunstan 2022-05-19 10:03:43 -04:00
parent 648aa6734f
commit a1e7616d6e

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