update script

Author: Pwd9000-ML

AzurePipelines/hello-world.yml

@@ -16,5 +16,6 @@ steps:
 
 - script: |
  echo Add other tasks to build, test, and deploy your project.
- echo See https://aka.ms/yaml
+ echo This codesace hostname: 
+ Hostname
  displayName: 'Run a multi-line script'