docs: update openmetrics demo README

Author: deepika-awasthi

core/src/main/java/io/temporal/samples/temporalcloudopenmetrics/README.md

@@ -94,4 +94,9 @@ Prometheus: http://localhost:9093/
 
 Go to:
 Status → Targets (make sure the scrape target is UP)
-Graph tab (search for Temporal metrics and run a query)
+Graph tab (search for Temporal metrics and run a query)
+
+## 8) Ran the sample and view the cloud metrics 
+
+- `./gradlew -q execute -PmainClass=io.temporal.samples.temporalcloudopenmetrics.WorkerMain`
+- `./gradlew -q execute -PmainClass=io.temporal.samples.temporalcloudopenmetrics.Starter`