Standardize column names in app.py from 'Site' and 'Slate' to 'site' and 'slate' for consistency in player data filtering, improving code readability and maintainability.

app.py

@@ -413,16 +413,16 @@ with tab2:
     elif slate_type_var2 == 'Showdown':
         player_roo_raw = sd_roo_data.copy()
         if site_var == 'Draftkings':
-            player_roo_raw['Site'] = 'Draftkings'
+            player_roo_raw['site'] = 'Draftkings'
         elif site_var == 'Fanduel':
-            player_roo_raw['Site'] = 'Fanduel'
+            player_roo_raw['site'] = 'Fanduel'
 
         if slate_var2 == 'Main':
-            player_roo_raw = player_roo_raw[player_roo_raw['Slate'] == 'DK SD1']
+            player_roo_raw = player_roo_raw[player_roo_raw['slate'] == 'DK SD1']
         elif slate_var2 == 'Secondary':
-            player_roo_raw = player_roo_raw[player_roo_raw['Slate'] == 'DK SD2']
+            player_roo_raw = player_roo_raw[player_roo_raw['slate'] == 'DK SD2']
         elif slate_var2 == 'Auxiliary':
-            player_roo_raw = player_roo_raw[player_roo_raw['Slate'] == 'DK SD3']
+            player_roo_raw = player_roo_raw[player_roo_raw['slate'] == 'DK SD3']
     
     if team_select2:
         player_roo_raw = player_roo_raw[player_roo_raw['Team'].isin(team_select2)]