'modify'

_includes/head/custom.html

@@ -1,5 +1,12 @@
 <!-- start custom head snippets -->
 
 <!-- insert favicons. use http://realfavicongenerator.net/ -->
+<script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
+<script>
+  (adsbygoogle = window.adsbygoogle || []).push({
+    google_ad_client: "ca-pub-2189739546636161",
+    enable_page_level_ads: true
+  });
+</script>
 
 <!-- end custom head snippets -->

_layouts/single.html

@@ -71,12 +71,4 @@ <h4 class="page__related-title">{{ site.data.ui-text[site.locale].related_label
       </div>
     </div>
   {% endif %}
-</div>
-
-<script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
-<script>
-  (adsbygoogle = window.adsbygoogle || []).push({
-    google_ad_client: "ca-pub-2189739546636161",
-    enable_page_level_ads: true
-  });
-</script>
+</div>