Add "disable touch sounds" to FAQ

[gusr]

I was trying to figure out why there were strange audio clicks coming from Waydroid, which also sometimes had the effect of cutting out the first few hundred milliseconds of sounds played by Waydroid apps. Then I discovered that it was simply the Android touch feedback!Turning that off made the experience way better.

I would suggest adding an item "Disable touch sounds" to the FAQ with the instructions:

Start Settings and select Sound.
Expand the Advanced section. Under the heading "Other sounds and vibrations", disable "Touch sounds".