www/grafana9: fix rc.d script procname

Grafana switched to a unified binary, changing `grafana-server` to be a
wrapper script that executes `grafana server` in its place. This patch
fixes `procname` in the rc.d script, so that rc.d's process name
checking doesn't fail / the service gets properly reported as running.

PR:		270098
MFH:		2023Q1

www/grafana9/Makefile

@@ -1,4 +1,5 @@
 PORTNAME=	grafana
+PORTREVISION=	1
 DISTVERSIONPREFIX=	v
 DISTVERSION=	9.4.3
 CATEGORIES=	www

www/grafana9/files/grafana.in

@@ -57,10 +57,10 @@ fi
 pidfile="/var/run/${name}/${name}.pid"
 required_files="${grafana_config}"
 
-procname="%%PREFIX%%/bin/grafana-server"
+procname="%%PREFIX%%/bin/grafana"
 command="/usr/sbin/daemon"
 command_args="-f ${grafana_syslog_output_flags} -p ${pidfile} -t ${name} \
-	/usr/bin/env ${grafana_env} ${procname} \
+	/usr/bin/env ${grafana_env} ${procname} server \
 	-config=${grafana_config} \
 	-homepath=${grafana_homepath} \
 	${grafana_args}"