Fix broken configuration documentation page

site/_docs/configuration.md

@@ -355,23 +355,23 @@ In the build (or serve) arguments, you can specify a Jekyll environment and valu
 
 For example, suppose you set this conditional statement in your code:
 
-```liquid
+{% highlight liquid %}
 {% raw %}
 {% if jekyll.environment == "production" %}
    {% include disqus.html %}
 {% endif %}
 {% endraw %}
-```
+{% endhighlight %}
 
 When you build your Jekyll site, the content inside the `if` statement won't be run unless you also specify a `production` environment in the build command, like this:
 
-```bash
+{% highlight sh %}
 JEKYLL_ENV=production jekyll build
-```
+{% endhighlight %}
 
 Specifying an environment value allows you to make certain content available only within specific environments.
 
-The default value for `JEKYLL_ENV` is `development`. Therefore if you omit `JEKYLL_ENV` from the build arguments, the default value will be `JEKYLL_ENV=development`. Any content inside `{% raw %}{% if jekyll.environment == "development" %}{% raw %}` tags will automatically appear in the build.
+The default value for `JEKYLL_ENV` is `development`. Therefore if you omit `JEKYLL_ENV` from the build arguments, the default value will be `JEKYLL_ENV=development`. Any content inside `{% raw %}{% if jekyll.environment == "development" %}{% endraw %}` tags will automatically appear in the build.
 
 Your environment values can be anything you want (not just `development` or `production`). Some elements you might want to hide in development environments include Disqus comment forms or Google Analytics. Conversely, you might want to expose an "Edit me in GitHub" button in a development environment but not include it in production environments.