Remove references to "special", as mount_qemufwcfg(8) does not

actually take such an argument.  Discussed with jmcneill.

sbin/mount_qemufwcfg/mount_qemufwcfg.8

@@ -1,4 +1,4 @@
-.\"	$NetBSD: mount_qemufwcfg.8,v 1.2 2017/11/28 11:55:30 wiz Exp $
+.\"	$NetBSD: mount_qemufwcfg.8,v 1.3 2020/04/29 09:54:43 gson Exp $
 .\"
 .\" Copyright (c) 2017 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -24,7 +24,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd November 28, 2017
+.Dd April 29, 2020
 .Dt MOUNT_QEMUFWCFG 8
 .Os
 .Sh NAME
@@ -38,18 +38,16 @@
 .Op Fl m Ar file-mode
 .Op Fl u Ar uid
 .Op Ar fuse-options
-.Ar special node
+.Ar node
 .Sh DESCRIPTION
 The
 .Nm
 command provides the QEMU fw_cfg configuration files in a file system
 tree at point
 .Ar node .
-Both
-.Ar special
-and
+The directory specified by
 .Ar node
-are converted to absolute paths before use.
+is converted to an absolute path before use.
 .Pp
 The options are as follows:
 .Bl -tag -width Ds