message: docs: Fix example in readme since we use default imports
diff: @@ -13,9 +13,9 @@ yarn add @polkadot/keyring
  Classes and Functions can be imported as follows:
  ```js
  -import Keyring from '@polkadot/keyring'; // Default export
  -import { pair } from '@polkadot/keyring/pair';
  -import { testKeyring } from '@polkadot/keyring/testing';
  +import Keyring from '@polkadot/keyring';
  +import pair from '@polkadot/keyring/pair';
  +import testKeyring from '@polkadot/keyring/testing';
  ```
  ## Documentation and Available Utilities
  