Remove trailing whitespace. Fix Xr. Fix Dd argument.

lib/libc/gen/bsd_signal.3

@@ -1,4 +1,4 @@
-.\"	$NetBSD: bsd_signal.3,v 1.1 2016/06/05 17:16:44 christos Exp $
+.\"	$NetBSD: bsd_signal.3,v 1.2 2016/06/06 08:27:22 wiz Exp $
 .\"
 .\" Copyright (c) 1980, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -29,13 +29,13 @@
 .\"
 .\"     @(#)bsd_signal.3	8.3 (Berkeley) 4/19/94
 .\"
-.Dd June 04, 2016
+.Dd June 4, 2016
 .Dt BSD_SIGNAL 3
 .Os
 .Sh NAME
 .Nm bsd_signal
 .Nd BSD version of
-.Xr signal
+.Xr signal 3
 .Sh LIBRARY
 .Lb libc
 .Sh SYNOPSIS
@@ -59,7 +59,7 @@ is set to indicate the error.
 .Sh SEE ALSO
 .Xr signal 3
 .Sh STANDARDS
-The 
+The
 .Fn bsd_signal
 function conforms to
 .St -p1003.1-2004 .