- resolve a missing closing parenthetical

PR:		195364
Differential Revision:	https://reviews.freebsd.org/D1228
Submitted by:	luferbsd@gmail.com
Approved by:	remko (mentor)


git-svn-id: svn+ssh://svn.freebsd.org/doc/head@46029 c2e8774f-c49f-e111-b436-862b2bbc8956