Update README.md

README.md

@@ -3,17 +3,18 @@ In this lesson you create your first job.
 
 Use the console to create a freestyle job with one build step.
 
-# WINDOWS SYSTEMS
+## WINDOWS SYSTEMS
 If you are running Jenkins on a Windows system:
 
 1. Select the `Execute Windows batch command` build step
 2. Enter the following for the command:
 ```
+echo "Hello, Jenkins"
 ```
 
 [Follow this link for more details on Windows](WINDOWS.md)
 
-# MacOS, Linux, and Docker
+## MacOS, Linux, and Docker
 If you are running Jenkins on MacOS, Linux, or Docker:
 
 1. Select the `Execute shell` build step.