Fix post uri

source/_layouts/nobutthehome.html

@@ -8,7 +8,12 @@ <h1>Hallo und Herzlich Willkommen</h1>
     <ul>
       {% for post in site.posts %}
         <li>
-          <a href="{{ post.url }}">{{ post.title }}</a>
+          <!--
+	    see also
+	    * https://jekyllrb.com/docs/variables/
+	    * github workflow: bundle exec jekyll build --baseurl <github variable>
+	  -->
+          <a href="{{site.baseurl}}{{post.url}}">{{ post.title }}</a>
           {{ post.excerpt }}
         </li>
       {% endfor %}