Update ref_functions.md (replaced deprecated RESET) (qmk#17436)

Author: kosorin

docs/ref_functions.md

@@ -87,9 +87,13 @@ To configure the default layer sounds, you would want to define this in your `co
 
 ## Resetting the keyboard
 
-There is the `RESET` quantum keycode that you can use. But if you want to reset the board as part of a macro, rather than hitting a key separately, you can do that.
+There is the `QK_REBOOT` or `QK_RBT` quantum keycode that you can use. But if you want to reset the board as part of a macro, rather than hitting a key separately, you can do that.
 
-And to do so, add `reset_keyboard()` to your function or macro, and this will reset to bootloader.
+And to do so, add `soft_reset_keyboard()` to your function or macro.
+
+## Reset to bootloader
+
+To reset to the bootloader use `QK_BOOTLOADER` or `QK_BOOT` keycode or `reset_keyboard()` function.
 
 ## Wiping the EEPROM (Persistent Storage)