Update Reaction Commerce - New Site and URL

README.md

@@ -770,7 +770,7 @@ _Related: [Community-Supported Agriculture (CSA)](#community-supported-agricultu
 - [OXID eShop](https://oxidforge.org) - OXID eShop is a flexible open source e-commerce software with a wide range of functionalities. ([Demo](https://demoshop.oxid-esales.com/community-edition/), [Source Code](https://github.com/OXID-eSales/oxideshop_ce)) `GPL-3.0` `PHP`
 - [PrestaShop](https://www.prestashop.com/) - PrestaShop offers a free, open-source and fully scalable e-commerce solution. ([Demo](https://demo.prestashop.com/), [Source Code](https://github.com/PrestaShop/PrestaShop)) `OSL-3.0` `PHP`
 - [Pretix](https://pretix.eu/) - Django based ticket sales platform for events. ([Source Code](https://github.com/pretix)) `Apache-2.0` `Python`
-- [Reaction Commerce](https://reactioncommerce.com/) - Customizable, real-time reactive, Javascript commerce platform. ([Source Code](https://github.com/reactioncommerce/reaction)) `GPL-3.0` `Nodejs`
+- [Reaction Commerce](https://mailchimp.com/developer/open-commerce/) - Customizable, real-time reactive, Javascript commerce platform. ([Source Code](https://github.com/reactioncommerce/reaction)) `GPL-3.0` `Nodejs`
 - [Saleor](https://saleor.io) - Django based open-sourced e-commerce storefront. ([Demo](https://demo.getsaleor.com/), [Source Code](https://github.com/mirumee/saleor)) `BSD-3-Clause` `Python`
 - [Shopware Community Edition](https://shopware.com/community/) - PHP based open source e-commerce software made in Germany. ([Demo](https://www.shopware.com/en/test-demo/), [Source Code](https://github.com/shopware/platform)) `MIT` `PHP`
 - [Shuup](https://www.shuup.com/) - Django powered fully customizable open source e-commerce framework for small and large sites. ([Source Code](https://github.com/shuup/shuup)) `AGPL-3.0` `Python`