Add a small test to the tutorial

index.html

@@ -39,6 +39,16 @@ layout: default
 $ radicale --verbose
 Listening to localhost port 5232
 Radicale server ready</pre>
+
+    <p>
+      When your server is launched, you can check that everything's OK by going
+      to <a href="http://localhost:5232/">http://localhost:5232/</a> with your browser!
+    </p>
+
+    <p>
+      Want more? Why don't you check our wonderful
+      <a href="{{ site.baseurl }}/documentation">documentation</a>?
+    </p>
   </section>
 
   <section>