Update README.md

The file sprites_1788_16x16.npy contains a NumPy array of the shape (89400, 16, 16, 3), which might suggest that it contains 89400 sprites Images. These data referred from
DeepLearning.ai under https://s172-31-11-251p20262.lab-aws-production.deeplearning.ai/tree , and only uploaded here for learning and educational purposes.

README.md

@@ -1,5 +1,5 @@
 ---
-license: cc-by-nc-2.0
+license: mit
 task_categories:
 - image-classification
 ---