added video tags to demo

Author: KrishP147

README.md

@@ -59,7 +59,7 @@ For users practicing intermittent fasting, NutriSync offers built-in fasting tim
 
 ## Demo
 
-https://github.com/user-attachments/assets/demov1.mp4
+<video src="https://github.com/user-attachments/assets/demov1.mp4" width="100%" autoplay loop muted playsinline></video>
 
 ## Tech Stack