Update README.md

README.md

@@ -39,4 +39,4 @@ A chat between a human and an artificial intelligence bot. The bot gives helpful
 |Bot|: 
 ```
 
-注意：在历史对话的Bot输出结尾，拼接一个</s>
+注意：在历史对话的Bot输出结尾，拼接一个&lt;/s&gt;