Git-Action: Update Readme

Author: thelightway24

README.md

@@ -45,6 +45,7 @@
 | 2753 | [2753. 윤년](./%EB%B0%B1%EC%A4%80/Bronze/2753.%E2%80%85%EC%9C%A4%EB%85%84) |
 | 2884 | [2884. 알람 시계](./%EB%B0%B1%EC%A4%80/Bronze/2884.%E2%80%85%EC%95%8C%EB%9E%8C%E2%80%85%EC%8B%9C%EA%B3%84) |
 | 2908 | [2908. 상수](./%EB%B0%B1%EC%A4%80/Bronze/2908.%E2%80%85%EC%83%81%EC%88%98) |
+| 2920 | [2920. 음계](./%EB%B0%B1%EC%A4%80/Bronze/2920.%E2%80%85%EC%9D%8C%EA%B3%84) |
 | 3052 | [3052. 나머지](./%EB%B0%B1%EC%A4%80/Bronze/3052.%E2%80%85%EB%82%98%EB%A8%B8%EC%A7%80) |
 | 5597 | [5597. 과제 안 내신 분．．？](./%EB%B0%B1%EC%A4%80/Bronze/5597.%E2%80%85%EA%B3%BC%EC%A0%9C%E2%80%85%EC%95%88%E2%80%85%EB%82%B4%EC%8B%A0%E2%80%85%EB%B6%84%EF%BC%8E%EF%BC%8E%EF%BC%9F) |
 | 5622 | [5622. 다이얼](./%EB%B0%B1%EC%A4%80/Bronze/5622.%E2%80%85%EB%8B%A4%EC%9D%B4%EC%96%BC) |