added multi-label as a radio button user input

app.py

@@ -184,7 +184,7 @@ iface = gr.Interface(
         label="Please enter the candidate labels (separated by 2 consecutive semicolons)...",
         placeholder="Labels here separated by ;;"),
         gr.inputs.Textbox(choices=[False, True],
-        label="Multi-label?"],
+        label="Multi-label?")],
     outputs=gr.outputs.Label(num_top_classes=5),
     #interpretation="default",
     examples=prep_examples())