Fixes to CI lesson

_episodes/09-CI.md

@@ -36,8 +36,6 @@ git switch -c main
 You can also [download the pre-made workshop repository as a zip file](https://github.com/MolSSI-Education/molecool/archive/refs/tags/git-start.zip).
 If downloading as a zip file, you will need to initialize `git` in the repository and make an initial commit in order to use git.
 
-:::
-
 **Note** - For this lesson, you must be able to push to GitHub.
 If you are using the pre-made repository, you will need to create an *empty* repository on GitHub, then
 change the remote URL to your own repository.
@@ -528,8 +526,11 @@ Searching the GitHub Marketplace, you might find [this action](https://github.co
 
 Implement this [ASCII Art Action](https://github.com/marketplace/actions/ascii-art-action) as **another job** in your workflow.
 Make it print your package name. Note that this Action will only run on Linux systems.
+This means you will want to change the `runs-on` keyword to an appropriate operating system.
 This is not in the documentation, but you will see a failure of your job if you try to run on another operating system.
 
+See if you can use some of [GitHub's built-in variables](https://docs.github.com/en/actions/learn-github-actions/variables#default-environment-variables) to print the package name or the username of the person who opened the pull request.
+
 `````{admonition} Solution
 :class: solution dropdown