Doc fix.

compose-assignment-2/README.md

@@ -24,5 +24,5 @@ Goal: This time imagine you're just wanting to learn Drupal's admin and GUI, or
 - Start containers like before, configure Drupal web install like before.
 - After website comes up, click on `Appearance` in top bar, and notice a new theme called `Bootstrap` is there. That's the one we added with our custom Dockerfile.
 - Click `Install and set as default`. Then click `Back to site` (in top left) and the website interface should look different. You've successfully installed and activated a new theme in your own custom image without installing anything on your host other then Docker!
-- If you exit (ctrl-c) and then `docker-compose` down it will delete containers, but not the volumes, so on next `docker-compose up` everything will be as it was.
+- If you exit (ctrl-c) and then `docker-compose down` it will delete containers, but not the volumes, so on next `docker-compose up` everything will be as it was.
 - To totally clean up volumes, add `-v` to `down` command.