Clean trailing whitespace

Marlin/src/inc/SanityCheck.h

       #error "TOOLCHANGE_PARK requires TOOLCHANGE_PARK_XY_FEEDRATE. Please update your Configuration."
     #endif
   #endif
-  
+
   #ifndef TOOLCHANGE_ZRAISE
     #error "TOOLCHANGE_ZRAISE required for EXTRUDERS > 1. Please update your Configuration."
   #endif