diff --git a/plusone-commons/src/main/java/xyz/zhouxy/plusone/commons/collection/MapModifier.java b/plusone-commons/src/main/java/xyz/zhouxy/plusone/commons/collection/MapModifier.java
index a0dfa74..7266b71 100644
--- a/plusone-commons/src/main/java/xyz/zhouxy/plusone/commons/collection/MapModifier.java
+++ b/plusone-commons/src/main/java/xyz/zhouxy/plusone/commons/collection/MapModifier.java
@@ -40,28 +40,28 @@ import com.google.common.annotations.Beta;
  *
  * <pre>
  * // MapModifier
- * MapModifier<String, Object> modifier = new MapModifier<String, Object>()
+ * MapModifier&lt;String, Object&gt; modifier = new MapModifier&lt;String, Object&gt;()
  *     .putAll(commonProperties)
  *     .put("username", "Ben")
  *     .put("accountStatus", LOCKED);
  *
  * // 从 Supplier 中获取 Map，并修改数据
- * Map<String, Object> map = modifier.getAndModify(HashMap::new);
+ * Map&lt;String, Object&gt; map = modifier.getAndModify(HashMap::new);
  *
  * // 可以灵活使用不同 Map 类型的不同构造器
- * Map<String, Object> map = modifier.getAndModify(() -> new HashMap<>(8));
- * Map<String, Object> map = modifier.getAndModify(() -> new HashMap<>(anotherMap));
- * Map<String, Object> map = modifier.getAndModify(TreeMap::new);
- * Map<String, Object> map = modifier.getAndModify(ConcurrentHashMap::new);
+ * Map&lt;String, Object&gt; map = modifier.getAndModify(() -&gt; new HashMap&lt;&gt;(8));
+ * Map&lt;String, Object&gt; map = modifier.getAndModify(() -&gt; new HashMap&lt;&gt;(anotherMap));
+ * Map&lt;String, Object&gt; map = modifier.getAndModify(TreeMap::new);
+ * Map&lt;String, Object&gt; map = modifier.getAndModify(ConcurrentHashMap::new);
  *
  * // 修改已有的 Map
  * modifier.modify(map);
  *
  * // 创建一个有初始化数据的不可变的 Map
- * Map<String, Object> map = modifier.getUnmodifiableMap();
+ * Map&lt;String, Object&gt; map = modifier.getUnmodifiableMap();
  *
  * // 链式调用创建并初始化数据
- * Map<String, Object> map = new MapModifier<String, Object>()
+ * Map&lt;String, Object&gt; map = new MapModifier&lt;String, Object&gt;()
  *     .putAll(commonProperties)
  *     .put("username", "Ben")
  *     .put("accountStatus", LOCKED)