add img choice

app.py

@@ -264,7 +264,7 @@ if __name__ == "__main__":
                     btn.click(request_images, inputs=[text, class_draw, style_draw, sample_size, sr_option], outputs=gallery)
 
                     sample_size.change(
-                        fun=uifn.change_img_choices,
+                        fn=uifn.change_img_choices,
                         inputs=[sample_size],
                         outputs=[img_choices]
                     )