update:加了一点注释

app/abstract.py

@@ -31,7 +31,7 @@ class PromptService(ABC):
 
 class LLMMsgService(ABC):
     @abstractmethod
-    def llm_msg_process(self, llm_chunk:list, **kwargs) -> list:
+    def llm_msg_process(self, llm_chunks:list, **kwargs) -> list:
         pass
     
 class TTSAudioService(ABC):