doc: show direction is optional in FETCH/MOVE's FROM/IN syntax
It used to show direction was required for FROM/IN.
Reported-by: Rob <rirans@comcast.net>
Discussion: https://postgr.es/m/
20211015165248.isqjceyilelhnu3k@localhost
Author: Rob <rirans@comcast.net>
Backpatch-through: 10