rand48(3) not drand48(3) to align with the actual man page and Xr

entries.

src/lib/libc/crypt/arc4random.3

@@ -1,4 +1,4 @@
-.\" $OpenBSD: arc4random.3,v 1.34 2014/07/19 16:11:16 naddy Exp $
+.\" $OpenBSD: arc4random.3,v 1.35 2014/11/25 16:45:24 millert Exp $
 .\"
 .\" Copyright 1997 Niels Provos <provos@physnet.uni-hamburg.de>
 .\" All rights reserved.
@@ -30,7 +30,7 @@
 .\"
 .\" Manual page, using -mandoc macros
 .\"
-.Dd $Mdocdate: July 19 2014 $
+.Dd $Mdocdate: November 25 2014 $
 .Dt ARC4RANDOM 3
 .Os
 .Sh NAME
@@ -52,7 +52,7 @@ described in
 .Xr rand 3 ,
 .Xr random 3 ,
 and
-.Xr drand48 3 .
+.Xr rand48 3 .
 .Pp
 Use of these functions is encouraged for almost all random number
 consumption because the other interfaces are deficient in either