fifo -> FIFO

ok millert@

src/lib/libc/string/strmode.3

@@ -1,4 +1,4 @@
-.\" $OpenBSD: strmode.3,v 1.8 2000/04/21 15:24:20 aaron Exp $
+.\" $OpenBSD: strmode.3,v 1.9 2003/04/02 19:00:26 jmc Exp $
 .\"
 .\" Copyright (c) 1990, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -68,7 +68,7 @@ directory
 .It l
 symbolic link
 .It p
-fifo
+FIFO
 .It s
 socket
 .It w