remove ending - after truncating the name

chart/templates/cronjob-back-command.yaml

@@ -4,7 +4,7 @@
 apiVersion: batch/v1beta1
 kind: CronJob
 metadata:
-  name: {{ printf "%s-%s" (include "chart.fullname" $root) (join "-" $task.command | replace "_" "-") | trimSuffix "-" | trunc 52 }}
+  name: {{ printf "%s-%s" (include "chart.fullname" $root) (join "-" $task.command | replace "_" "-") | trunc 52 | trimSuffix "-" }}
   labels:
     {{- include "chart.labels" $root | nindent 4 }}
     app: back-cron-job