Folger Tech i3-2020 now defaults to 2 Max7219 units

Marlin/src/config/examples/FolgerTech/i3-2020/Configuration_adv.h

@@ -1697,7 +1697,7 @@
 
   #define MAX7219_GCODE            // Add the M7219 G-code to control the LED matrix
   #define MAX7219_INIT_TEST    2   // Do a test pattern at initialization (Set to 2 for spiral)
-  #define MAX7219_NUMBER_UNITS 1   // Number of Max7219 units in chain.
+  #define MAX7219_NUMBER_UNITS 2   // Number of Max7219 units in chain.
   #define MAX7219_ROTATE     -90   // Rotate the display clockwise (in multiples of +/- 90°)
                                    // connector at:  right=0   bottom=-90  top=90  left=180
   /**