fix typo in predict.py

refleshing -> refreshing

predict.py

@@ -176,7 +176,7 @@ def predict(inputs, top_p, temperature, chatbot=[], history=[], system_prompt=''
                     chunk = get_full_error(chunk, stream_response)
                     error_msg = chunk.decode()
                     if "reduce the length" in error_msg:
-                        chatbot[-1] = (chatbot[-1][0], "[Local Message] Input (or history) is too long, please reduce input or clear history by refleshing this page.")
+                        chatbot[-1] = (chatbot[-1][0], "[Local Message] Input (or history) is too long, please reduce input or clear history by refreshing this page.")
                         history = []
                     elif "Incorrect API key" in error_msg:
                         chatbot[-1] = (chatbot[-1][0], "[Local Message] Incorrect API key provided.")