config: Update PidFile directory to /run/

debian/ngircd.conf

@@ -71,7 +71,7 @@
 	# user ID, e.g. the directory the pidfile resides in must be
 	# writable by the ngIRCd user and exist in the chroot directory.
 	# Keep this setting in sync with PIDFILE in /etc/init.d/ngircd
-	PidFile = /var/run/ngircd/ngircd.pid
+	PidFile = /run/ngircd/ngircd.pid
 
 	# Ports on which the server should listen. There may be more than
 	# one port, separated with ",". (Default: 6667)