Fix Teensy 4.1 include

Marlin/src/pins/pins.h

@@ -623,7 +623,7 @@
   #include "stm32f7/pins_THE_BORG.h"            // STM32F7                                env:STM32F7
 #elif MB(REMRAM_V1)
   #include "stm32f7/pins_REMRAM_V1.h"           // STM32F7                                env:STM32F7
-#elif MB(TEENSY40_41)
+#elif MB(TEENSY41)
   #include "teensy4/pins_TEENSY41.h"            // Teensy-4.x                             env:teensy41
 #elif MB(T41U5XBB)
   #include "teensy4/pins_T41U5XBB.h"            // Teensy-4.x                             env:teensy41