Update README.md

README.md

@@ -33,7 +33,7 @@ You can follow along as GitHub Actions runs your job by going to the **Actions**
 
 When the tests finish, you'll see a red X :x: or a green check mark :heavy_check_mark: in the merge box. At that point, you can access the logs for the build job and its associated steps.
 
-By looking at the logs, can you identify which tests failed? To find it, go to one of the failed builds and scroll through the log. Look for a section that lists all the unit tests. We're looking for the name of the test with an "x".
+_By looking at the logs, can you identify which tests failed?_ To find it, go to one of the failed builds and scroll through the log. Look for a section that lists all the unit tests. We're looking for the name of the test with an "x".
 
 <img alt="screenshot of a sample build log with the names of the tests blurred out" src=https://user-images.githubusercontent.com/16547949/65922013-e740a200-e3b1-11e9-8151-faf52c30201e.png width=400 />
 
@@ -46,6 +46,9 @@ If the checks don't appear or if the checks are stuck in progress, there's a few
 ### :keyboard: Activity: Fix the test
 
 1. Update the code in the `ci` branch to get the test to pass. You need to look something like this:
+   ```markdown
+   _underscore_
+   ```
 
 1. **Commit changes**.
 1. Wait about 20 seconds and then refresh this page (the one you're following instructions from). [GitHub Actions](https://docs.github.com/actions) will automatically update to the next step.