feat: update comment

src/types.ts

@@ -29,14 +29,17 @@ export interface Storage {
 export interface PersistOptions {
   /**
    * it is the prefix of the key to store the persisted state under, such as the store id is "test", that store key is "pinia_test" by default.
+   * @default pinia
    */
   prefix?: string
   /**
    * it is the storage for state persist,  you can choose localStorage, sessionStorage or your custom storage.
+   * @default window.localStorage
    */
   storage?: Storage
   /**
    * when app first loader or refresh, whether to overwrite the existing state with the output from state directly, instead of merging the two objects with deep merge.
+   * @default false
    */
   overwrite?: boolean
 }