Minor variable related cleanup and rewording of plpgsql docs

When Who What
2021-03-17 17:09:40 Tom Lane (tgl) Closed in commitfest 2021-03 with status: Committed
2021-03-17 17:09:40 Tom Lane (tgl) Changed committer to tgl
2021-03-09 17:03:38 David Steele (dsteele) Added dsteele as reviewer
2021-02-01 12:53:57 Masahiko Sawada (masahikosawada) Closed in commitfest 2021-01 with status: Moved to next CF
2020-12-03 09:51:40 Anastasia Lubennikova (lubennikovaav) Closed in commitfest 2020-11 with status: Moved to next CF
2020-11-30 16:02:12 Pavel Stehule (okbobcz) New status: Ready for Committer
2020-11-26 05:13:46 Pavel Stehule (okbobcz) Added okbobcz as reviewer
2020-10-21 15:24:08 David Johnston (polobo) Changed authors to David Johnston (polobo)
2020-10-21 15:24:02 David Johnston (polobo) Attached mail thread CAKFQuwYvMKucM5fnZvHSo-ah4S=_n9gmKeu6EAo=_fTrohunqQ@mail.gmail.com
2020-10-21 15:24:02 David Johnston (polobo) Created patch record