Be explicit which options are available for prenice. Bump date.

usr.bin/pkill/pkill.1

@@ -1,4 +1,4 @@
-.\"	$NetBSD: pkill.1,v 1.21 2010/12/07 07:39:15 mrg Exp $
+.\"	$NetBSD: pkill.1,v 1.22 2010/12/07 08:55:52 wiz Exp $
 .\"
 .\" Copyright (c) 2002 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -27,7 +27,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd December 6, 2010
+.Dd December 7, 2010
 .Dt PKILL 1
 .Os
 .Sh NAME
@@ -80,9 +80,7 @@ priority of all processes that match the criteria given on the command line.
 The following options are available for
 .Nm pkill
 and
-.Nm pgrep ,
-and some are available for
-.Nm prenice :
+.Nm pgrep :
 .Bl -tag -width xxxxxxxx
 .It Fl d Ar delim
 Specify a delimiter to be printed between each process ID.
@@ -173,6 +171,11 @@ This option is valid only when given as the first argument to
 .Nm pkill .
 .El
 .Pp
+The
+.Fl l
+flag is also availale for
+.Nm prenice .
+.Pp
 Note that a running
 .Nm pgrep
 or