Solve typo issue

src/main/java/be/cylab/java/wowa/training/Example.java

@@ -93,7 +93,7 @@ public final class Example {
  */
 
         long start_time = System.currentTimeMillis();
-        HashMap<AbstractSolution, double[]> solutions = trainer.runKFoldCSV(
+        HashMap<AbstractSolution, double[]> solutions = trainer.runKFold(
                 data_file,
                 expected_file,
                 fold_number,