Update Kconfig

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: soburi

Kconfig

@@ -39,7 +39,7 @@ config ARDUINO_MAX_TONES
 	default -1
 	help
 	  Specify the number of sounds that can be played simultaneously with tone()
-	  If it is less than or equal to 0, it will set the maximum number available
+	  If it is less than 0, it will set the maximum number available
 	   from the system configuration.