add API to top navbar

Author: Chemaclass

templates/navigation/top-navigation.html

@@ -2,9 +2,12 @@
     <li class="top-navigation__item {% if current_path and current_path == '/' %}active{% endif %}">
         <a href="/">Features</a>
     </li>
-    <li class="top-navigation__item {% if current_path and current_path is starting_with('/documentation/') %}active{% endif %}">
+    <li class="top-navigation__item {% if current_path and current_path is starting_with('/documentation/') and not current_path is starting_with('/documentation/api/') %}active{% endif %}">
         <a href="/documentation/getting-started/">Docs</a>
     </li>
+    <li class="top-navigation__item {% if current_path and current_path is starting_with('/documentation/api/') %}active{% endif %}">
+        <a href="/documentation/api/">API</a>
+    </li>
     <li class="top-navigation__item {% if current_path and current_path is starting_with('/tutorials/exercises/') %}active{% endif %}">
         <a href="/tutorials/exercises/basic">Exercises</a>
     </li>