Fix openstack_api_check_status service name

Change-Id: I78c868dd8d2aaff50f8a63394dcf6e545406c51b
diff --git a/neutron/files/grafana_dashboards/neutron_prometheus.json b/neutron/files/grafana_dashboards/neutron_prometheus.json
index fe860cb..e1826ec 100755
--- a/neutron/files/grafana_dashboards/neutron_prometheus.json
+++ b/neutron/files/grafana_dashboards/neutron_prometheus.json
@@ -70,7 +70,7 @@
           "tableColumn": "",
           "targets": [
             {
-              "expr": "openstack_api_check_status{service=\"neutron-api\"}",
+              "expr": "openstack_api_check_status{service=\"neutron\"}",
               "format": "time_series",
               "intervalFactor": 2,
               "refId": "A",
@@ -786,4 +786,4 @@
   "timezone": "browser",
   "title": "Neutron",
   "version": 3
-}
\ No newline at end of file
+}