fix: fix return type

Author: ccharly

packages/account-api/src/api/provider.ts

@@ -81,5 +81,5 @@ export type Bip44AccountProvider = AccountProvider<
    */
   createAccounts: (
     options: Bip44CreateAccountOptions,
-  ) => Promise<Bip44Account<KeyringAccount>>[];
+  ) => Promise<Bip44Account<KeyringAccount>[]>;
 };