Fix typo

README.md

@@ -20,7 +20,7 @@ This library is meant for running predictions against a pre-trained XGBoost mode
 // Create predictor for a model and define the number of workers (and other settings)
 predictor, _ := xgboost.NewPredictor(modelPath, runtime.NumCPU(), 0, 0, -1)
 
-// Make prediction for one column
+// Make prediction for one row
 res, _ := predictor.Predict(xgboost.FloatSliceVector([]float32{1, 2, 3}))
 fmt.Printf("Results: %+v\n", res)
 // output: Results: [1.08002]