fix alignment

docker-compose/prometheus-grafana/config/prometheus.yml

@@ -18,8 +18,8 @@ scrape_configs:
 
   # Example job for node_exporter
   # - job_name: 'node_exporter'
-  #  static_configs:
-  #    - targets: ['node_exporter:9100']
+  #   static_configs:
+  #     - targets: ['node_exporter:9100']
 
   # Example job for cadvisor
   # - job_name: 'cadvisor'