feat(metrics): minor fix for internal metrics fix PR grafana#5758

Author: torkelo

conf/defaults.ini

@@ -353,9 +353,9 @@ enabled           = true
 interval_seconds  = 60
 
 # Send internal Grafana metrics to graphite
-[metrics.graphite]
+; [metrics.graphite]
 ; address = localhost:2003
-; prefix = prod.grafana.%(instance_name)s.
+; prefix = service.grafana.%(instance_name)s.
 
 [grafana_net]
 url = https://grafana.net

conf/sample.ini

@@ -303,7 +303,7 @@ enabled           = true
 ;interval_seconds  = 10
 
 # Send internal metrics to Graphite. %instance_name% in prefix will be replaced with the value of instance_name
-[metrics.graphite]
+; [metrics.graphite]
 ; address = localhost:2003
 ; prefix = service.grafana.%instance_name%