Update dl.py

dl.py

@@ -302,7 +302,7 @@ with gr.Blocks(css=css) as build:
             with gr.Row():
                 with gr.Column(scale=1):
                     with gr.Group():
-                        space_check=gr.Checkbox(label="Spaces",choices=[])
+                        space_check=gr.CheckboxGroup(label="Spaces",choices=[])
                 with gr.Column(scale=1):
                     dl_checked_btn=gr.Button("Download Checked")
                 with gr.Column(scale=2):