More details to pairing process Osram led strip (Koenkk#1645)

Author: jakob42

docs/devices/4052899926110.md

@@ -33,6 +33,8 @@ Repeat the step above four more times for a total of five OFF/ON cycles.
 After the fifth cycle, turn the light ON and wait for 10 seconds.
 The bulb will then blink 3 times to indicate it has been reset.
 
+A stop watch on the phone seems to help. Start the stop watch when turning the power on and just toggle every 5 seconds until it reaches 50 seconds. Then wait for the blinking.
+
 Repeat the above steps if the light doesn’t blink.