Update app.py

app.py

@@ -25,7 +25,7 @@ def get_html(url_list, height=224):
         html2 = f"<img style='height: {height}px; margin: 5px' src='{escape(url)}'>"  
         html = html + html2
     html += "</div>"
-    return HTML
+    return html
 
 def compute_embeddings(query):
     with torch.no_grad():