more comment fixes.

src/etc/rtadvd.conf

@@ -1,5 +1,4 @@
-#	$OpenBSD: rtadvd.conf,v 1.2 2000/03/17 17:18:59 itojun Exp $
-#	$NetBSD: rtadvd.conf,v 1.3 1999/07/03 20:50:39 hubertf Exp $
+#	$OpenBSD: rtadvd.conf,v 1.3 2000/03/17 17:34:43 itojun Exp $
 
 # common definitions.
 # Note: All of the following parameters have default values defined