Add disclaimer demo slide and discord qr code

demos/cncf-k8s-quebec-meetup-september-2025/slides.md

@@ -2,6 +2,12 @@
 theme: uncover
 ---
 
+# Disclaimer :
+
+<img src="./lego_bloc.png" width="400"/>
+
+---
+
 # Voici l'histoire de Petit Poisson
 
 ---
@@ -228,7 +234,7 @@ Demo time
 
 ---
 
-# 🎼 
+### 🎼 
 
 Harmony : [https://git.nationtech.io/nationtech/harmony](https://git.nationtech.io/nationtech/harmony)
 
@@ -238,4 +244,5 @@ Harmony : [https://git.nationtech.io/nationtech/harmony](https://git.nationtech.
 
 LinkedIn : [https://www.linkedin.com/in/jean-gabriel-gill-couture/](https://www.linkedin.com/in/jean-gabriel-gill-couture/)
 
-Courriel : [jg@nationtech.io](mailto:jg@nationtech.io)
+Discord : [https://discord.gg/DNR5sbSm4X](https://discord.gg/DNR5sbSm4X)
+ <img src="./qrcode_discord_nationtech.png" width="120"/>