fix markdown error

Author: brianamarie

responses/00_class-introduction-issue.md

@@ -20,7 +20,7 @@ The first step to publishing your blog to the web is to enable GitHub Pages on t
 
 {% if GHE_HOST %}
 
-1. Under your repository name, click [**Settings**]{{ repoUrl }}/settings)
+1. Under your repository name, click [**Settings**]({{ repoUrl }}/settings)
 1. In the "GitHub Pages" section, click **Launch automatic page generator**
 1. Edit the **Project name** and **Body** to be what you'd like your main page to display
 1. Click **Continue to layouts**
@@ -29,7 +29,7 @@ The first step to publishing your blog to the web is to enable GitHub Pages on t
 
 {% else %}
 
-1. Under your repository name, click [**Settings**]{{ repoUrl }}/settings)
+1. Under your repository name, click [**Settings**]({{ repoUrl }}/settings)
 1. In the "GitHub Pages" section, click **Choose a theme**
 2. Select a theme
 3. Click **Select theme**