Update theme to minima for 03_change-theme.md

Author: a-a-ron

responses/03_change-theme.md

@@ -10,13 +10,13 @@ You can check out the `_config.yml` file on the **Code** tab of your repository.
 
 ### :keyboard: Activity: Modify the config file
 
-Let's change the `_config.yml` so it's a perfect fit for your new blog. First, we need to use a blog-ready theme. For this activity, we will use a theme named `jekyll-theme-minimal`.
+Let's change the `_config.yml` so it's a perfect fit for your new blog. First, we need to use a blog-ready theme. For this activity, we will use a theme named `minima`.
 
 1. Navigate to the **Code** tab of this repository, and browse to the `_config.yml` file, or click this link [here]({{ repoUrl }}/blob/master/_config.yml).
 2. In the upper right corner, click :pencil2: to open the file editor.
-3. Add a `theme:` set to **jekyll-theme-minimal** so it shows in the `_config.yml` file as below:
+3. Add a `theme:` set to **minima** so it shows in the `_config.yml` file as below:
     ```
-    theme: jekyll-theme-minimal
+    theme: minima
     ```
 4. Modify the other configuration variables such as `title:`, `author:`, and `description:` to customize your site.
 5. Click **Create a new branch for this commit and start a pull request**.