Minor bswap man page error

[Jason Bacon <outpaddling%yahoo.com@localhost>]

This is what I'm currently seeing on NetBSD 7.1.2:

BSWAP(3)                   Library Functions Manual                   
BSWAP(3)

NAME
     bswap16, bswap32, bswap64 -- byte-order swapping functions

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <sys/types.h>
     #include <machine/bswap.h>

There is no machine/bswap.h.  I think it should read sys/bswap.h.

My base may not be completely up-to-date, though it's close.