increase concurrency count to 500 (#6)

- increase concurrency count to 500 (561c8dd0a6e6c8e9e3d4df48ed5ab19d67a44734)

app.py

@@ -197,4 +197,4 @@ with block:
            """
         )
 
-block.queue(concurrency_count=100).launch()
+block.queue(concurrency_count=500).launch()