+ Fixed mispelling error in spark-cmd script

Author: Genarito

config/spark-cmd.sh

@@ -9,9 +9,9 @@ sleep 5
 
 if [[ $1 = "start" ]]; then
   if [[ $2 = "master-node" ]]; then
-     /sbin/spark-3.0.0-bin-hadoop2.7/sbin/start-master-node.sh
-     sleep infinity
-     exit
+    /sbin/spark-3.0.0-bin-hadoop2.7/sbin/start-master.sh
+    sleep infinity
+    exit
   fi
   /sbin/spark-3.0.0-bin-hadoop2.7/sbin/start-slave.sh master-node:7077
   sleep infinity
@@ -20,8 +20,8 @@ fi
 
 if [[ $1 = "stop" ]]; then
   if [[ $2 = "master-node" ]]; then
-     /sbin/spark-3.0.0-bin-hadoop2.7/sbin/stop-master-node.sh
-     exit
+    /sbin/spark-3.0.0-bin-hadoop2.7/sbin/stop-master.sh
+    exit
   fi
   /sbin/spark-3.0.0-bin-hadoop2.7/sbin/stop-slave.sh
 fi