[Updates] Update GPTCache configuration/docs (#1098)

Co-authored-by: Deven Patel <deven298@yahoo.com>

embedchain/llm/openai.py

@@ -42,6 +42,7 @@ class OpenAILlm(BaseLlm):
             chat = ChatOpenAI(**kwargs, streaming=config.stream, callbacks=callbacks, api_key=api_key)
         else:
             chat = ChatOpenAI(**kwargs, api_key=api_key)
+
         if self.functions is not None:
             from langchain.chains.openai_functions import \
                 create_openai_fn_runnable