auto update README.md

Author: CheChe903

README.md

@@ -95,6 +95,7 @@
 |2170. 선 긋기|[링크](./%EB%B0%B1%EC%A4%80/Gold/2170.%E2%80%85%EC%84%A0%E2%80%85%EA%B8%8B%EA%B8%B0/README.md)|
 |21758. 꿀 따기|[링크](./%EB%B0%B1%EC%A4%80/Gold/21758.%E2%80%85%EA%BF%80%E2%80%85%EB%94%B0%EA%B8%B0/README.md)|
 |2212. 센서|[링크](./%EB%B0%B1%EC%A4%80/Gold/2212.%E2%80%85%EC%84%BC%EC%84%9C/README.md)|
+|2225. 합분해|[링크](./%EB%B0%B1%EC%A4%80/Gold/2225.%E2%80%85%ED%95%A9%EB%B6%84%ED%95%B4/README.md)|
 |2252. 줄 세우기|[링크](./%EB%B0%B1%EC%A4%80/Gold/2252.%E2%80%85%EC%A4%84%E2%80%85%EC%84%B8%EC%9A%B0%EA%B8%B0/README.md)|
 |2294. 동전 2|[링크](./%EB%B0%B1%EC%A4%80/Gold/2294.%E2%80%85%EB%8F%99%EC%A0%84%E2%80%852/README.md)|
 |24492. Cow Frisbee|[링크](./%EB%B0%B1%EC%A4%80/Gold/24492.%E2%80%85Cow%E2%80%85Frisbee/README.md)|