Add M701/M702 Filament Load/Unload, M603

Marlin/src/gcode/gcode.cpp

@@ -399,8 +399,7 @@ void GcodeSuite::process_parsed_command() {
       #endif
 
       #if ENABLED(PARK_HEAD_ON_PAUSE)
-        case 125: // M125: Store current position and move to filament change position
-          M125(); break;
+        case 125: M125(); break;  // M125: Store current position and move to filament change position
       #endif
 
       #if ENABLED(BARICUDA)