added api doc link

bigsk05 · bigsk05 · commit 65493a591bf7 · 2022-12-25T14:41:12.000Z
diff --git a/README.md b/README.md
@@ -1,3 +1,6 @@
 # InfiniteMusic
 
-Infinite Music System
+InfiniteMusic on-demand system
+
+## API Doc
+[Online API Doc](https://www.apifox.cn/apidoc/project-2123328)
