Cool Retro Term: clarify note about gpu acceleration

This description was written back when the gpu driver was not enabled by
default.

apps/Cool Retro Term/description

@@ -1,6 +1,7 @@
 Simulates an old CRT terminal.
-This is fully hardware accelerated as long as your Fake KMS GPU driver is enabled.
 Yes, it's a usable pi@raspberrypi terminal emulator.
 
 To run: Menu -> System Tools -> Cool Retro Term
 To run in terminal: ~/cool-retro-term/cool-retro-term
+
+Note: This is fully hardware accelerated as long as you have the GPU driver enabled in raspi-config (this is on by default).