ref shard size

app.py

@@ -271,7 +271,9 @@ with gr.Blocks() as demo:
                         info="Choose CLI",
                     )
                     out_shard_size = gr.Dropdown(
-                        ["500M", "1B", "2B", "3B", "4B", "5B"]
+                        ["500M", "1B", "2B", "3B", "4B", "5B"],
+                        label="Output Shard Size",
+                        value="500M",
                     )
                     token = gr.Textbox(
                         lines=1,