[docs] fix broken link in browser tests README (#5865)

## Summary

Fixes a broken link showing demo of Playwright UI mode features.

Author: christian-byrne

browser_tests/README.md

@@ -84,7 +84,7 @@ UI mode features:
 - **Console/Network Tabs**: View logs and API calls at each step
 - **Attachments Tab**: View all snapshots with expected and actual images
 
-![Playwright UI Mode](https://github.com/user-attachments/assets/c158c93f-b39a-44c5-a1a1-e0cc975ee9f2)
+![Playwright UI Mode](https://github.com/user-attachments/assets/9b9cb09f-6da7-4fa0-81df-2effceced755)
 
 For CI or headless testing: