Update README.md

Author: WorkofAditya

README.md

@@ -21,7 +21,7 @@ You can safely use it offline to manage sensitive information.
 ## Download
 
 
-[<img width="237" height="78" alt="nixe" src="https://github.com/user-attachments/assets/4c960460-7b29-4c31-b1e0-66c60c8f9a80" />](https://github.com/WorkofAditya/ChatBot/releases/download/v1.5/Vault-1.5.apk)
+[<img width="237" height="78" alt="nixe" src="https://github.com/user-attachments/assets/4c960460-7b29-4c31-b1e0-66c60c8f9a80" />](https://github.com/WorkofAditya/ChatBot/releases/download/v2.0.0/ChatBot_V2.0.apk)
 
 [<img width="236" height="78" alt="-image" src="https://github.com/user-attachments/assets/4160d3f8-c1b6-40c8-9589-f7a9423c7731" />](https://chatbot-b3b.pages.dev/)