doc: clarify syntax notation, particularly parentheses

Bruce Momjian <bruce@momjian.us>

Commit: 03739f23ff9911aea7d58c9cc0b58109c8ea95a6
Author: Bruce Momjian <bruce@momjian.us>
Date: 2022-02-03T02:53:51Z
Releases: 10.20
doc:  clarify syntax notation, particularly parentheses

Also move TCL syntax to the PL/tcl section.

Reported-by: davs2rt@gmail.com

Discussion: https://postgr.es/m/164308146320.12460.3590769444508751574@wrigleys.postgresql.org

Backpatch-through: 10

Files

PathChange+/−
doc/src/sgml/notation.sgml modified +3 −3
doc/src/sgml/pltcl.sgml modified +4 −2

Documentation touched