Update app.py

app.py

@@ -334,7 +334,7 @@ with tab5:
             data=convert_df_to_csv(prop_df),
             file_name='Nba_prop_source.csv',
             mime='text/csv',
-            key='prop_proj',
+            key='prop_source',
         )
         prop_type_var = st.selectbox('Select prop category', options = ['All Props', 'points', 'rebounds', 'assists', 'threes', 'PRA', 'points+rebounds',
                                                                         'points+assists', 'rebounds+assists'])