fix comment mistake, issue#2

Author: kaanakan

confusion_matrix.py

@@ -44,7 +44,7 @@ def process_batch(self, detections, labels):
         Both sets of boxes are expected to be in (x1, y1, x2, y2) format.
         Arguments:
             detections (Array[N, 6]), x1, y1, x2, y2, conf, class
-            labels (Array[M, 5]), x1, y1, x2, y2, class
+            labels (Array[M, 5]), class, x1, y1, x2, y2
         Returns:
             None, updates confusion matrix accordingly
         '''