Punctuation after macro arguments needs to be in a separate argument.

Found while testing mandocdb(8).

src/lib/libc/stdlib/labs.3

@@ -29,13 +29,14 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.\"	$OpenBSD: labs.3,v 1.11 2013/06/05 03:39:23 tedu Exp $
+.\"	$OpenBSD: labs.3,v 1.12 2014/01/19 05:21:12 schwarze Exp $
 .\"
-.Dd $Mdocdate: June 5 2013 $
+.Dd $Mdocdate: January 19 2014 $
 .Dt LABS 3
 .Os
 .Sh NAME
-.Nm labs, llabs
+.Nm labs ,
+.Nm llabs
 .Nd return the absolute value of a long integer
 .Sh SYNOPSIS
 .In stdlib.h