update/fix: filter-dkimsign

Per the README I believe /etc/mail/dkim should be a directory not a
file. ok?

--
James Turner


Index: Makefile
===================================================================
RCS file: /cvs/ports/mail/opensmtpd-filters/dkimsign/Makefile,v
retrieving revision 1.2
diff -u -p -u -p -r1.2 Makefile
--- Makefile 23 Sep 2019 19:24:45 -0000 1.2
+++ Makefile 30 Sep 2019 14:57:01 -0000
@@ -5,7 +5,7 @@ COMMENT= dkim signer integration to the
V= 0.1
FILTER_NAME = dkimsign
DISTNAME = filter-dkimsign-${V}
-REVISION = 0
+REVISION = 1

CATEGORIES= mail
HOMEPAGE= http://imperialat.at/dev/filter-dkimsign
Index: pkg/PLIST
===================================================================
RCS file: /cvs/ports/mail/opensmtpd-filters/dkimsign/pkg/PLIST,v
retrieving revision 1.2
diff -u -p -u -p -r1.2 PLIST
--- pkg/PLIST 23 Sep 2019 19:24:45 -0000 1.2
+++ pkg/PLIST 30 Sep 2019 14:57:01 -0000
@@ -7,7 +7,7 @@ libexec/smtpd/
@mode 0770
@owner _dkimsign
@group _dkimsign
-@sample ${SYSCONFDIR}/mail/dkim
+@sample ${SYSCONFDIR}/mail/dkim/
@mode
@owner
@group