Update README.md

Author: magefan

README.md

@@ -99,3 +99,4 @@ The code is licensed under [EULA](https://magefan.com/end-user-license-agreement
   * [Magento 2 Better Order Grid Extension](https://magefan.com/magento-2-better-order-grid-extension)
   * [Magento 2 Admin Email Notifications](https://magefan.com/magento-2-admin-email-notifications)
   * [Magento 2 Facebook Pixel Extension](https://magefan.com/magento-2-facebook-pixel-extension)
+  * [Better Magento 2 Checkout Extension](https://magefan.com/better-magento-2-checkout-extension)