Correct steps outputs example -- it needs an id (#6695)

content/actions/reference/workflow-syntax-for-github-actions.md

@@ -434,7 +434,7 @@ The URL can be an expression and can use any context except for the `secrets` co
 ```yaml
 environment:
   name: production_environment
-  url: ${{ steps.step_name.outputs.url_output }}
+  url: ${{ steps.step_id.outputs.url_output }}
 ```
 {% endraw %}
 {% endif %}