added ASUS ZenBook 15 Flip OLED to tested devices

Author: alesya-h

README.md

@@ -22,6 +22,7 @@ this is a standard mechanism for this functionality nowadays. Tested devices:
 - Lenovo IdeaPad Flex 5i Gen 7
 - Samsung Galaxy Book Flex2 5G
 - Dell XPS 13 9310 2-in-1
+- ASUS ZenBook 15 Flip OLED UP6502ZD
 
 If it works on your device, please tell me and I'll add it to the list (or just submit a pull request yourself).
 To check if your device is supported, run `stdbuf -oL libinput debug-events|grep switch`, flip your laptop between