Revision 341175

MFS12 r341168:
MFC r340974:
bectl: sync usage with man page, removing stray multibyte characters
in the process.

PR:             233526
Submitted by:   tigersharke@gmail.com (original version)
Reviewed by:    kevans
Approved by:	re (gjb)
Differential revision:  https://reviews.freebsd.org/D18335