Added documentation for audio & voice to menu (#5371)
Added documentation for audio & voice to menu (#5371)

* Added documentation for audio & voice to menu
* Incorporated comments from review; Changed spelling of TRÅDFRI

Signed-off-by: Christoph Weitkamp <64b2b6d12bfe4baae7dad3d018f8cbf6b0e7a044@christophweitkamp.de>

Snickermicker/smarthome,Snickermicker/smarthome,Snickermicker/smarthome,Snickermicker/smarthome