Update app.py

app.py

@@ -135,7 +135,7 @@ with open('info.md') as f:
           if colname == final_colname:
             continue
             
-          gr.Markdown("##Question " + (num + 1))
+          gr.Markdown("##Question " + str(num + 1))
           
           # access categories dict if data is categorical
           # otherwise, just use a number input