{PR Message - Write freely, remove this bracket if unnecessary}
docs : update for issue - "Proofread: < 05-Memory / 05-ConversationKGMemory >" #198
참고로 주셨던 링크 내용에서 아래 부분만 변경해 적용했습니다!

Let's examine the memory after having a conversation using custom a ConversationChain with ConversationKGMemory by LCEL
->
Let's examine the memory after having a conversation using a custom ConversationChain with ConversationKGMemory by LCEL

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