Update README.md

Author: sepp89117

README.md

@@ -5,7 +5,7 @@ GoPro Bluetoothspecs are from https://gopro.github.io/OpenGoPro/ble
 
 Web Bluetooth API Docs: https://developer.mozilla.org/en-US/docs/Web/API/Web_Bluetooth_API 
 
-<img src="https://github.com/sepp89117/GoPro_Web_RC/blob/main/preview.png" width="630">
+<img src="https://github.com/sepp89117/GoPro_Web_RC/blob/main/preview_v1.2.png" width="630">
 
 Web browsers compatible with Bluetooth API see:
 https://developer.mozilla.org/en-US/docs/Web/API/Web_Bluetooth_API#browser_compatibility