fix url for node-wot exampls

Author: ashimura

releases/note1/index.html

@@ -447,8 +447,7 @@ <h2>Abstract</h2>
       which is considered the reference open source implementation
       at the moment. Check its <a href=
       "https://github.com/eclipse/thingweb.node-wot">source
-      code</a>, including <a href=
-      "https://github.com/eclipse/thingweb.node-wot/examples">examples</a>.</p>
+      code</a>, including <a href="https://github.com/eclipse/thingweb.node-wot/tree/master/examples">examples</a>.</p>
     </div>
   </section>
   <section id="sotd" class="introductory">