update auto-reply plugin

Author: wj-Mcat

src/wechaty_plugin_contrib/contrib/auto_reply_plugin/plugin.py

@@ -28,7 +28,7 @@
 @dataclass
 class AutoReplyRule:
     keyword: str
-    reply_content: Union[str, FileBox, Contact, Message]
+    reply_content: Union[str, FileBox, Contact, Message, ]
 
 
 @dataclass