add dataset reference

assets/content.py

@@ -33,7 +33,8 @@ Among these records, there are 988 distinct combinations of Keypoints, which ind
 
 The test set encompasses all 171 Keypoint categories.
 
-For further information, please refer to the "About" page.
+If you want to using HuggingFace dataset, go to [ANGO Dataset] https://huggingface.co/datasets/AngoHF/ANGO-S1
+For more details, please refer to the "About" page.
 """
 TEST_SCRIPT_TEXT = """
 <br>