Doc: fix minor issues in GiST support function documentation.
commit36d1a848a86afd2855215af2a112b9bde999354a
authorTom Lane <tgl@sss.pgh.pa.us>
Mon, 4 Oct 2021 17:34:31 +0000 (4 13:34 -0400)
committerTom Lane <tgl@sss.pgh.pa.us>
Mon, 4 Oct 2021 17:34:31 +0000 (4 13:34 -0400)
tree6724aef55467b5ac13a16cd3fb2fea65c1a94614
parent7111e332c57ddb562d0ce26a4e08761a0baafb65
Doc: fix minor issues in GiST support function documentation.

gist.sgml and xindex.sgml hadn't been fully updated for the
addition of a sortsupport support function (commit 16fa9b2b3).
xindex.sgml also missed that the compress and decompress support
functions are optional, an apparently far older oversight.

In passing, fix gratuitous inconsistencies in wording and
capitalization.

Noted by E. Rogov.  Back-patch to v14; the residual issues
before that aren't significant enough to bother with.

Discussion: https://postgr.es/m/163335322905.12519.5711557029494638051@wrigleys.postgresql.org
doc/src/sgml/gist.sgml
doc/src/sgml/xindex.sgml