Update README.md

Author: Mudityadev

README.md

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 ## 1. Overview
 
-![Demo PainPain Ransomware PoC](web/assets/demo.png)
-
 📺 **Watch the Demo Video:**  
 [![Watch on YouTube](https://img.youtube.com/vi/0KRUst9dbDk/0.jpg)](https://youtu.be/0KRUst9dbDk?si=xA-qgz5TpnEX_twe)