advise to update /etc/rc.conf.local instead of /etc/rc.conf; from Remco

ok todd@

src/etc/afs/README

@@ -1,4 +1,4 @@
-# $OpenBSD: README,v 1.3 2003/08/05 14:41:53 hin Exp $
+# $OpenBSD: README,v 1.4 2009/08/10 02:23:22 okan Exp $
 
 Please enter an AFS cell near you in the ThisCell file.
 
@@ -8,6 +8,6 @@ the AFS client will honor the setuid bit on binaries.
 If you have an "unknown" cell that is not known in the CellServDB, make
 sure to update CellServDB with your cell information.
 
-afs is enabled by changing 'afs=NO' to 'afs=YES' in /etc/rc.conf
+afs is enabled by adding 'afs=YES' to /etc/rc.conf.local
 
 The ARLA project has a webpage at: http://www.stacken.kth.se/projekt/arla/