Tutorial pager : link to summary

Author: Matthieu Oger

_layouts/tutorial.html

@@ -61,9 +61,11 @@ <h2 class="entry__title">
         {% endif %}
         </section>
 
+        {% if page.home %}
         <section class="pager__ref">
-          <a href="{{ page.url | remove: 'index.html' }}" title="Summary">Summary</a>
+          <a href="{{ page.home | remove: 'index.html' }}#summary" title="Summary">Summary</a>
         </section>
+        {% endif %}
 
         <section class="pager__newer">
         {% if page.next %}

tutorials/2d-game-unity/index.md

@@ -25,7 +25,7 @@ Get more information about our [licenses on GitHub](https://github.com/pixelnest
 
 The source code is available on our [GitHub repository](https://github.com/pixelnest/2d-game-unity-tutorial).
 
-## Chapters
+## Chapters <span id="summary"></span>
 
 [  ![Unity][unity_logo_url]  ][unity_logo_url]