DISCOVERABLE_TIMEOUT_MS correction

[pstambrecht]

DISCOVERABLE_TIMEOUT_MS renamed to DISCOVERABLE_TIMEOUT_S because this value is required in seconds. Comments corrected.

Link: https://developer.android.com/reference/android/bluetooth/BluetoothAdapter.html#EXTRA_DISCOVERABLE_DURATION

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CLAs look good, thanks!

[Fleker]

Yes, it does seem like the value is expected to be seconds. Can you rebase your change?