mdoc fixes from pjanzen

src/lib/libutil/opendev.3

@@ -1,4 +1,4 @@
-.\"	$OpenBSD: opendev.3,v 1.12 2002/02/26 07:28:51 pvalchev Exp $
+.\"	$OpenBSD: opendev.3,v 1.13 2002/02/26 21:16:26 pvalchev Exp $
 .\"
 .\" Copyright (c) 2000, Todd C. Miller.  All rights reserved.
 .\" Copyright (c) 1996, Jason Downs.  All rights reserved.
@@ -85,7 +85,11 @@ The
 return value and errors are the same as the return value and errors of
 .Xr open 2 .
 .Sh WARNINGS
-If realpath is not NULL, on return it will point to internal
+If
+.Fa realpath
+is not 
+.Dv NULL ,
+on return it will point to internal
 static storage space that will be overwritten by subsequent calls.
 .Sh SEE ALSO
 .Xr open 2 ,