添加例子例子"openai_proxy": 'http://127.0.0.1:4780'

configs/model_config.py.example

@@ -69,6 +69,7 @@ llm_model_dict = {
     # 如果出现WARNING: Retrying langchain.chat_models.openai.acompletion_with_retry.<locals>._completion_with_retry in
     # 4.0 seconds as it raised APIConnectionError: Error communicating with OpenAI.
     # 需要添加代理访问(正常开的代理软件可能会拦截不上)需要设置配置openai_proxy 或者 使用环境遍历OPENAI_PROXY 进行设置
+    # 比如: "openai_proxy": 'http://127.0.0.1:4780'
     "gpt-3.5-turbo": {
         "api_base_url": "https://api.openai.com/v1",
         "api_key": os.environ.get("OPENAI_API_KEY"),