[Docs] Add note about `ENABLE_COMPILE_KEYCODE` to docs (#21290)

Co-authored-by: Ryan <fauxpark@gmail.com>

docs/quantum_keycodes.md

@@ -15,3 +15,5 @@ On this page we have documented keycodes between `0x00FF` and `0xFFFF` which are
 |`QK_CLEAR_EEPROM`|`EE_CLR` |Reinitializes the keyboard's EEPROM (persistent memory)                                                                                          |
 |`QK_MAKE`        |         |Sends `qmk compile -kb (keyboard) -km (keymap)`, or `qmk flash` if shift is held. Puts keyboard into bootloader mode if shift & control are held |
 |`QK_REBOOT`      |`QK_RBT` |Resets the keyboard. Does not load the bootloader                                                                                                |
+
+!> Note: `QK_MAKE` requires `#define ENABLE_COMPILE_KEYCODE` in your config.h to function.