docs(zh): Update state.md about resetting the state (#2349) (#2359)

Co-authored-by: edison <daiwei521@126.com>

diff --git a/packages/docs/zh/core-concepts/state.md b/packages/docs/zh/core-concepts/state.md
index a6dbc227c03379effcd66c953770b3875c34ae38..43b1912da27cc4aa2f3d95733fc569ee65b7916a 100644 (file)
--- a/packages/docs/zh/core-concepts/state.md
+++ b/packages/docs/zh/core-concepts/state.md
@@ -93,6 +93,22 @@ const store = useStore()
 store.$reset()
 ```
 
+在 `$reset()` 内部，会调用 `state()` 函数来创建一个新的状态对象，并用它替换当前状态。
+
+在 [Setup Stores](/core-concepts/index.md#setup-stores) 中，您需要创建自己的 `$reset()` 方法：
+
+```ts
+export const useCounterStore = defineStore('counter', () => {
+  const count = ref(0)
+
+  function $reset() {
+    count.value = 0
+  }
+
+  return { count, $reset }
+})
+```
+
 ### 使用选项式 API 的用法 %{#usage-with-the-options-api}%
 
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