fix: list to string

app.py

@@ -11,4 +11,4 @@ if text:
     st.write(f"{type(out)}, length: {len(out)}")
     
     if len(out) >= 1:
-      st.download_button("summary download", out, file_name="summersation.txt", mime="text/plain")
+      st.download_button("summary download", ",".join(out), file_name="summersation.txt", mime="text/plain")