Fix Azteeg X5 MINI BOARD_NAME (#13632)

Co-Authored-By: klcjr89 <klcjr89@users.noreply.github.com>

Marlin/src/pins/pins_AZTEEG_X5_MINI.h

 #endif
 
 #ifndef BOARD_NAME
-  #define BOARD_NAME        "Azteeg X5 MINI WIFI"
+  #define BOARD_NAME        "Azteeg X5 MINI"
 #endif
 #define BOARD_WEBSITE_URL "http://www.panucatt.com/azteeg_X5_mini_reprap_3d_printer_controller_p/ax5mini.htm"