comma typo fix

app.py

@@ -243,8 +243,8 @@ if __name__ == "__main__":
         examples = gr.Examples(
         	examples=[[None, "human", "PBMC 100 cells"],[None, "human", "PBMC 1000 cells"]],
         	inputs=[file_input, species_input, default_dataset_input],
-            outputs=[image_output, file_output, pred_output]
-        	fn=main
+            outputs=[image_output, file_output, pred_output],
+        	fn=main,
         	cache_examples=True
         )