style: 统一 Ruff 代码格式

core/douyu/__init__.py

@@ -6,7 +6,12 @@ from .login_api_wgapi import WgapiLoginAPI
 from .login_api_iframe import IframeLoginAPI
 from .email_verifier import EmailVerifier
 from .activity_client import DouyuActivityClient, DouyuActivityError
-from .recharge_api import FishFinRechargeClient, FishFinRechargeConfig, FishFinRechargeConfigError, FishFinRechargeError
+from .recharge_api import (
+    FishFinRechargeClient,
+    FishFinRechargeConfig,
+    FishFinRechargeConfigError,
+    FishFinRechargeError,
+)
 
 __all__ = [
     "DouyuLogin",