docs(readme): update demo link to new video recording for enhanced visibility

Author: doniaskima

README.md

@@ -8,7 +8,7 @@ It keeps a local SQLite database with an FTS5 index for fast search. It does **n
 
 ## Demo
 
-https://github.com/user-attachments/assets/25638fe5-766e-4318-928a-c3a4b7eccab0
+https://github.com/user-attachments/assets/e7c5da2a-4aee-40da-b3c9-ef3ea32da651
 
 ## Features