Adding Callouts to Tasks > Inject Data Into Applications (#5023)

* Adding callout

* Adding callout

* Adding callouts

* Update distribute-credentials-secure.md

docs/tasks/inject-data-application/define-command-argument-container.md

@@ -77,8 +77,9 @@ the techniques available for defining environment variables, including
 and
 [Secrets](/docs/concepts/configuration/secret/).
 
-NOTE: The environment variable appears in parentheses, `"$(VAR)"`. This is
+**Note:** The environment variable appears in parentheses, `"$(VAR)"`. This is
 required for the variable to be expanded in the `command` or `args` field.
+{: .note}
 
 ## Run a command in a shell