diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/DefaultCacheRepository.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/DefaultCacheRepository.java
index 3cf401ac0..32bb627b4 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/DefaultCacheRepository.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/DefaultCacheRepository.java
@@ -215,13 +215,15 @@ public class DefaultCacheRepository extends CacheRepository {
     }
 
     /// ```json
-    /// "libraries": {
-    ///     // allow a library has multiple hash code.
+    /// {
+    ///     "libraries": {
+    ///         // allow a library has multiple hash code.
     ///         [
-    ///         "name": "net.minecraftforge:forge:1.11.2-13.20.0.2345",
-    ///         "hash": "blablabla",
-    ///         "type": "forge"
+    ///             "name": "net.minecraftforge:forge:1.11.2-13.20.0.2345",
+    ///             "hash": "blablabla",
+    ///             "type": "forge"
     ///         ]
+    ///     }
     /// }
     ///```
     /// assets and versions will not be included in index.