Merge pull request #15072 from RoadieHQ/document-square-bracket-syntax-in-docs

use nunjucks "square bracket syntax" for steps in docs

packages/create-app/templates/default-app/examples/template/template.yaml

@@ -61,14 +61,14 @@ spec:
       name: Register
       action: catalog:register
       input:
-        repoContentsUrl: ${{ steps.publish.output.repoContentsUrl }}
+        repoContentsUrl: ${{ steps['publish'].output.repoContentsUrl }}
         catalogInfoPath: '/catalog-info.yaml'
 
   # Outputs are displayed to the user after a successful execution of the template.
   output:
     links:
       - title: Repository
-        url: ${{ steps.publish.output.remoteUrl }}
+        url: ${{ steps['publish'].output.remoteUrl }}
       - title: Open in catalog
         icon: catalog
-        entityRef: ${{ steps.register.output.entityRef }}
+        entityRef: ${{ steps['register'].output.entityRef }}