Stop using reserved words in the smtpd.conf configuration examples

in the default smtpd.conf and smtpd.conf(5) manual page. This
eliminates ambiguity in our documentation examples that can cause
confusion.
Input and OK deraadt@ schwarze@ kn@

src/etc/mail/smtpd.conf

@@ -1,4 +1,4 @@
-#	$OpenBSD: smtpd.conf,v 1.11 2018/06/04 21:10:58 jmc Exp $
+#	$OpenBSD: smtpd.conf,v 1.12 2019/07/24 15:31:53 kmos Exp $
 
 # This is the smtpd server system-wide configuration file.
 # See smtpd.conf(5) for more information.
@@ -9,11 +9,11 @@ table aliases file:/etc/mail/aliases
 #
 listen on lo0
 
-action "local" mbox alias <aliases>
-action "relay" relay
+action "local_mail" mbox alias <aliases>
+action "outbound" relay
 
 # Uncomment the following to accept external mail for domain "example.org"
 #
-# match from any for domain "example.org" action "local"
-match for local action "local"
-match for any action "relay"
+# match from any for domain "example.org" action "local_mail"
+match for local action "local_mail"
+match for any action "outbound"