add link to slides

index.html

@@ -27,6 +27,9 @@ <h3>About this Page</h3>
             <h3>Demo page structure</h3>
             <p>This part of each page shows some interactive stuff.
                 On the right side, you can see the relevant source snippets.</p>
+
+            <h3>Slides</h3>
+            <p>The slides are also available: <a href="https://mburri.github.io/techkafi-state-of-html-examples/slides/state-of-html.sozi.html" target="_blank">https://mburri.github.io/techkafi-state-of-html-examples/slides/state-of-html.sozi.html</a></p>
         </div>
 
         <code class="language-javascript">