fix: design database

designs/diagrams/database.puml

@@ -13,6 +13,7 @@ entity TransactionOut {
   * plat_number
   price
   * transaction_in_id
+  * parking_fee_id
   * user_id
 }
 
@@ -62,7 +63,6 @@ entity Vehicle {
   * plat_number
   * member_id
   * transaction_out_id
-  * parking_fee_id
   * type_vehicle_id
 }