Update app.py

app.py

@@ -76,7 +76,7 @@ with col1:
     )
 with col2:
     # TopK选择滑块
-    topk = st.slider(
+    top_k = st.slider(
         "Top K", 1, 100, 50, help="choose the number of results to display"
     )
 # 检索并展示结果