add bot selection label

app.py

@@ -15,7 +15,8 @@ def play(bot_select):
 
 def main(kwargs=None):
     bot_select = st.selectbox(
-        options=["DeepChessReplicationMinMax"]
+        label="bot",
+        options=["DeepChessReplicationMinMax"],
     )
     st.button("Play bot!", on_click=play, args=bot_select)