Add GIF to Ansible concepts slide (slide 20)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

index.html

@@ -211,6 +211,9 @@ output "public_ip" {
     <p>YAML playbooks run tasks in order, across any number of hosts.<br>
     No daemon. No certificate authority. Just Python + SSH.<br>
     <em>Idempotent modules ensure the same playbook can run safely again and again.</em></p>
+    <img src="https://media.giphy.com/media/3oEjI6SIIHBdRxXI40/giphy.gif"
+         alt="It just works"
+         style="height:180px; margin-top:0.5em; border-radius:6px;">
   </section>
 
   <!-- ─── SLIDE 21 : Ansible code ──────────────────────────────────── -->