Update ChatEngine.py

ChatEngine.py

@@ -1,4 +1,3 @@
-from llama_index.llms.huggingface import HuggingFaceLLM
 from llama_index.core.base.llms.types import ChatMessage, MessageRole
 
 class ChatEngine:
@@ -8,10 +7,12 @@ class ChatEngine:
 
         Args:
             retriever (HybridRetriever): An instance of a retriever to fetch relevant documents.
+            model_name (str): The name of the language model to be used.
+            context_window (int, optional): The maximum context window size for the language model. Defaults to 32000.
+            temperature (float, optional): The temperature setting for the language model. Defaults to 0.
         """
 
         self.retriever = retriever
-
         self.chat_history = []
 
     def ask_question(self, question, llm):