Update to --name

Author: foxish

docs/running-on-kubernetes.md

@@ -73,9 +73,9 @@ To launch Spark Pi in cluster mode,
 $ bin/spark-submit \
     --master k8s://https://<k8s-apiserver-host>:<k8s-apiserver-port> \
     --deploy-mode cluster \
+    --name spark-pi \
     --class org.apache.spark.examples.SparkPi \
     --conf spark.executor.instances=5 \
-    --conf spark.app.name=spark-pi \
     --conf spark.kubernetes.driver.docker.image=<driver-image> \
     --conf spark.kubernetes.executor.docker.image=<executor-image> \
     local:///path/to/examples.jar