Update HG06492B.md (Koenkk#2356)

better description of the steps to follow to enter pairing mode, taken from the official manual and which worked perfectly for me

https://www.manualslib.de/manual/813439/Livarno-Lux-14148906L.html?page=18

docs/devices/HG06492B.md

@@ -30,9 +30,20 @@ pageClass: device-page
 Factory reset the light bulb.
 After resetting the bulb will automatically connect.
 
+To activate the pairing mode, turn the bulb off and on 3 times with one second in between, starting with the bulb on.  
+So:
+* on,
+* off (one second of waiting),
+* on (one second of waiting),
+* off (one second of waiting),
+* on (one second of waiting),
+* off (one second of waiting),
+* on (the bulb should now flash regularly)
+
 One option that might work is to use (very) short “on’s” and a little bit longer “off’s”, where you kill the light as soon as the bulb shows signs of turning on.
 Start with bulb on, then off, and then 3 “on’s”, wait in the 3rd ON state.
 Alternatively, start with the bulb on, and then repeat the off on sequence as above, but wait 2-3 seconds in each state (on and off).
+
 When in pairing state, the bulb will flash.
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