fix BaseConfig class (#485)

Author: HeliumOctahelide

src/plugins/ELF_RSS2/config.py

@@ -2,15 +2,15 @@
 from typing import List, Optional
 
 from nonebot import get_driver
-from nonebot.config import BaseConfig
+from nonebot.config import Config
 from nonebot.log import logger
 from pydantic import AnyHttpUrl
 
 DATA_PATH = Path.cwd() / "data"
 JSON_PATH = DATA_PATH / "rss.json"
 
 
-class ELFConfig(BaseConfig):
+class ELFConfig(Config):
     class Config:
         extra = "allow"