K8200: Example Configuration.h fixed

Example Configuration.h: fixed strange white characters preventing
compilation in lines 1 and 3 - oops

Marlin/example_configurations/K8200/Configuration.h

@@ -1,6 +1,6 @@
-#ifndef CONFIGURATION_H
+#ifndef CONFIGURATION_H
 #define CONFIGURATION_H
-
+
 #include "boards.h"