Used wrong stanza name variable in pgbackrest backup script

It has to be stanza_name without the repo information

bin/pgbackrest_backup.sh

@@ -196,7 +196,7 @@ while read -r stanza; do
 	# build the call command
 	CALL=(
 		"sudo" "-u" "${sudo_user}"
-		"pgbackrest" "--type=${BACKUP_TYPE}" "--stanza=${stanza}"
+		"pgbackrest" "--type=${BACKUP_TYPE}" "--stanza=${stanza_name}"
 	);
 	if [ -n "${stanza_repo}" ]; then
 		CALL=("${CALL[@]}" "--repo=${stanza_repo}");