fix typo

loki-docker-logs.sh

@@ -12,7 +12,7 @@ cat << EOF > /etc/docker/daemon.json
     "log-driver": "loki",
     "log-opts": {
         "loki-url": "https://int.loki.grid.tf/loki/api/v1/push",
-        "loki-batch-size": "400"
+        "loki-batch-size": "400",
         "loki-retries": "2",
         "loki-max-backoff": "800ms",
         "loki-timeout": "1s",