doc: fix description of backward_scan
authorAndrew Gierth
Thu, 17 May 2018 20:23:01 +0000 (21:23 +0100)
committerAndrew Gierth
Thu, 17 May 2018 20:23:01 +0000 (21:23 +0100)
commitee68541ce60dd585cbc53142ab9cd14bf10fdf8f
tree795929ffb3cacb05879eeff1ba36ba1794867c3f
parentaada0a7648e220d6e7a852e827b0d66d04280aed
doc: fix description of backward_scan

The description of the index property backward_scan was incorrect and
misleading; rectify.

Backpatch to 9.6 where the amutils functionality was introduced.
doc/src/sgml/func.sgml