Fix typo in configuration.h

Marlin/Configuration.h

@@ -59,7 +59,7 @@ Here are some standard links for getting your machine calibrated:
 // The following define selects which electronics board you have.
 // Please choose the name from boards.h that matches your setup
 #ifndef MOTHERBOARD
-  #define MOTHERBOARD BOARD_RAMPS_13
+  #define MOTHERBOARD BOARD_RAMPS_13_EFB
 #endif
 
 // Define this to set a custom name for your generic Mendel,