Update instructions in the config file

assets/sunshine.conf

@@ -140,7 +140,7 @@
 # You can find the name of the audio sink using the following command:
 # !! Linux only !!
 # pacmd list-sinks | grep "name:" if running vanilla pulseaudio
-# pactl info | grep Source` if running pipewire
+# pPipewire: Use `pactl info | grep Source`. In some causes you'd need to use the `sink` device. Try `pactl info | grep Sink`, if _Source_ doesn't work
 # audio_sink = alsa_output.pci-0000_09_00.3.analog-stereo
 #
 # !! Windows only !!