Use Mendel default for INVERT_Y_DIR

Marlin/Configuration.h

 
 // Invert the stepper direction. Change (or reverse the motor connector) if an axis goes the wrong way.
 #define INVERT_X_DIR false
-#define INVERT_Y_DIR false
+#define INVERT_Y_DIR true
 #define INVERT_Z_DIR false
 
 // @section extruder

Marlin/configurator/config/Configuration.h

 
 // Invert the stepper direction. Change (or reverse the motor connector) if an axis goes the wrong way.
 #define INVERT_X_DIR false
-#define INVERT_Y_DIR false
+#define INVERT_Y_DIR true
 #define INVERT_Z_DIR false
 
 // @section extruder

Marlin/example_configurations/RepRapWorld/Megatronics/Configuration.h

 
 // Invert the stepper direction. Change (or reverse the motor connector) if an axis goes the wrong way.
 #define INVERT_X_DIR false
-#define INVERT_Y_DIR false
+#define INVERT_Y_DIR true
 #define INVERT_Z_DIR false
 
 // @section extruder

Marlin/example_configurations/makibox/Configuration.h

 #define INVERT_X_DIR false
 #define INVERT_Y_DIR false
 #define INVERT_Z_DIR false
+
 #define INVERT_E0_DIR true
 #define INVERT_E1_DIR false
 #define INVERT_E2_DIR false