Revert publishing source formatting style

Author: parkerbxyz

responses/01a_class-introduction-issue.md

@@ -28,15 +28,15 @@ This project is centered around a memory game that will be deployed with GitHub
 1. Click the [**Settings**]({{ repoUrl }}/settings) tab in your repository.
 1. Scroll down until you see **Data services**.
 1. Under **Data services**, click the check boxes to enable all the data services.
-1. Scroll down to **GitHub Pages** and select **master branch** as a **Source**.
+1. Scroll down to **GitHub Pages** and select `master` as a **Source**.
 
 {% else %}
 
 ### :keyboard: Activity: Enable GitHub Pages
 
 
 1. Click the [**Settings**]({{ repoUrl }}/settings) tab in your repository.
-1. Scroll down to **GitHub Pages** and select **master branch** as a **Source**.
+1. Scroll down to **GitHub Pages** and select `master` as a **Source**.
 
 {% endif %}