docs: update indexeddb document (#4084)

packages/y-indexeddb/src/index.ts

@@ -129,10 +129,6 @@ export const getMilestones = async (
   return milestone.milestone;
 };
 
-/**
- * We use `doc.guid` as the unique key, please make sure it not changes.
- */
-
 export * from './provider';
 export * from './shared';
 export * from './utils';

packages/y-indexeddb/src/provider.ts

@@ -105,6 +105,9 @@ export const createIndexedDBDatasource = ({
   };
 };
 
+/**
+ * We use `doc.guid` as the unique key, please make sure it not changes.
+ */
 export const createIndexedDBProvider = (
   doc: Doc,
   dbName: string = DEFAULT_DB_NAME