docs: 更新文档

src/module/dropdownItem/index.vue

@@ -1,9 +1,17 @@
 <template>
   <li>
-    <div class="layui-menu-body-title">
+    <div class="layui-menu-body-title" @click="click">
       <slot />
     </div>
   </li>
 </template>
 
-<script setup name="LayDropdownItem" lang="ts"></script>
+<script setup name="LayDropdownItem" lang="ts">
+import { inject, Ref } from "vue";
+
+const openState:Ref<boolean> = inject('openState') as Ref<boolean>
+
+const click = function () {
+  openState.value = false
+}
+</script>