docs: 优化文档

src/hooks/useNestedEvent.ts

@@ -0,0 +1,7 @@
+import { ref, onMounted, onUnmounted, Ref } from 'vue'
+
+const useNestedEvent = (elementRef: Ref<HTMLElement | null>) => {
+    const event = ref(false)
+    return event
+  }
+  export default useNestedEvent