docs: make a link to audio document on Porting guide
Audio is a part of porting so that link is necessary on porting guide.
@@ -39,7 +39,7 @@ Understanding the TizenRT code structure and adhering to the structure helps in
2. [How to port TizenRT on new WiFi chipset](HowToPortTizenRTOnWiFiChipset.md)
## Audio
-Will be updated
+[How to use audio](HowToUseAudio.md)
## Confirmation of Porting
Will be updated
