Update README.md

README.md

@@ -1,6 +1,6 @@
 # Learning Jenkins, 03-01: Using a global build tool
 
-# Prerequisites
+## Prerequisites
 You will need to configure Maven as a global build tool.
 
 In the Jenkins web interface, go to:
@@ -9,7 +9,7 @@ In the Jenkins web interface, go to:
 
 Give your Maven installation a name and check the option to `Install automatically`.
 
-# Setting up the Jenkins Job
+## Setting up the Jenkins Job
 Create a freestyle job and configure it as follows:
 
 1. Under `Source Code Management`, select `Git` and enter the following URL:
@@ -21,7 +21,7 @@ https://github.com/LinkedInLearning/learning-jenkins-3003221
 4. Select the Maven version you configured in the previous step.
 5. For the goal, enter `package`.
 
-# WINDOWS SYSTEMS
+## WINDOWS SYSTEMS
 Select the `Execute Windows batch command` build step
 ```
 java -cp target/hello-1.0-SNAPSHOT.jar com.learningjenkins.App
@@ -30,7 +30,7 @@ Save the job and start the build.
 
 [Follow this link for more details on Windows](WINDOWS.md)
 
-# MacOS, Linux, and Docker
+## MacOS, Linux, and Docker
 Select the `Execute shell` build step.
 ```
 java -cp target/hello-1.0-SNAPSHOT.jar com.learningjenkins.App
@@ -39,7 +39,7 @@ Save the job and start the build.
 
 [Follow this link for more details on MacOS, Linux, and Docker](MAC_LINUX_DOCKER.md)
 
-# Troubleshooting Errors
+## Troubleshooting Errors
 ```
 ERROR: Couldn't find any revision to build. Verify the repository and branch configuration for this job.
 ```