Add `ERROR_LOG_ENABLED` description

README.en.md

@@ -110,6 +110,7 @@ For detailed configuration instructions, please refer to [Installation Guide-Env
 - `AZURE_DEFAULT_API_VERSION`: Azure channel default API version, default is `2025-04-01-preview`
 - `NOTIFICATION_LIMIT_DURATION_MINUTE`: Notification limit duration, default is `10` minutes
 - `NOTIFY_LIMIT_COUNT`: Maximum number of user notifications within the specified duration, default is `2`
+- `ERROR_LOG_ENABLED=true`: Whether to record and display error logs, default is `false`
 
 ## Deployment