- ggatel.8 currently doesn't mention the 'rescue' command and
documents a non-existing 'attach' command instead.
- while here address a spelling error
Approved by: wblock (mentor)
Differential Revision: https://reviews.freebsd.org/D2346
GEOM GATE to fix the issue described in r220264. This also means that we no
longer need -q option, remove it. Don't bother to leaving it as a no-op, as
ggatel(8) is just an example utility.