fix the link points detail.md

app.py

@@ -241,7 +241,7 @@ class SurveyEngine:
             Click the button below 🎲 if you'd like to evaluate another set. \n\n
             You can exit this study by closing this page. 
             For more details about this study, click 
-            [here](https://huggingface.co/spaces/zirui-wang/toy/blob/main/detail.md).
+            [here](https://huggingface.co/spaces/zirui-wang/video_quality_study/blob/main/detail.md).
         """
 
         # display confirm message