auto update README.md

README.md

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 |10828. 스택|[링크](./%EB%B0%B1%EC%A4%80/Silver/10828.%E2%80%85%EC%8A%A4%ED%83%9D/README.md)|
 |1427. 소트인사이드|[링크](./%EB%B0%B1%EC%A4%80/Silver/1427.%E2%80%85%EC%86%8C%ED%8A%B8%EC%9D%B8%EC%82%AC%EC%9D%B4%EB%93%9C/README.md)|
 |1920. 수 찾기|[링크](./%EB%B0%B1%EC%A4%80/Silver/1920.%E2%80%85%EC%88%98%E2%80%85%EC%B0%BE%EA%B8%B0/README.md)|
+|2164. 카드2|[링크](./%EB%B0%B1%EC%A4%80/Silver/2164.%E2%80%85%EC%B9%B4%EB%93%9C2/README.md)|
 |2751. 수 정렬하기 2|[링크](./%EB%B0%B1%EC%A4%80/Silver/2751.%E2%80%85%EC%88%98%E2%80%85%EC%A0%95%EB%A0%AC%ED%95%98%EA%B8%B0%E2%80%852/%EC%88%98%E2%80%85%EC%A0%95%EB%A0%AC%ED%95%98%EA%B8%B0%E2%80%852.py)|
 |9012. 괄호|[링크](./%EB%B0%B1%EC%A4%80/Silver/9012.%E2%80%85%EA%B4%84%ED%98%B8/README.md)|
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