Add a subtle Gotcha to Front Brightness and Rear Brightness help

[OakCityDirtyRandy]

This edit describes an interesting condition found occasionally on some hardware and provides a simple remedy.

[OakCityDirtyRandy]

For ease of reading (as compared to settings.xml), below is the modified text:
Note:

On very low brightness levels the LEDs will lose color precision and eventually turn off completely. This is a limitation of the LED strips and can’t be alleviated.
High brightness settings may trigger headlight flashing on configurations with dedicated headlight LEDs. If you observe this, try turning down this setting incrementally until it stops.