remove dead b2evolution demo link

README.md

@@ -519,7 +519,7 @@ _CMS are a practical way to setup a website with many features. CMS often come w
 
 - [Alfresco Community Edition](https://www.alfresco.com/products/community/download) - The open source Enterprise Content Management software that handles any type of content, allowing users to easily share and collaborate on content. ([Source Code](https://hub.alfresco.com/t5/alfresco-content-services-hub/project-overview-repository/ba-p/290502)) `LGPL-3.0` `Java`
 - [Apostrophe](http://apostrophecms.org/) - Node.js CMS with a focus on extensible in-context editing tools. ([Demo](http://demo.apostrophecms.org/), [Source Code](https://github.com/punkave/apostrophe)) `MIT` `Nodejs`
-- [b2evolution CMS](https://b2evolution.net/) - The most integrated CMS ever: b2evolution includes everything you need to build websites for publishing, sharing and interacting with your community. ([Demo](https://demo.b2evolution.net), [Source Code](https://github.com/b2evolution/b2evolution)) `GPL-2.0` `PHP`
+- [b2evolution CMS](https://b2evolution.net/) - The most integrated CMS ever: b2evolution includes everything you need to build websites for publishing, sharing and interacting with your community. ([Source Code](https://github.com/b2evolution/b2evolution)) `GPL-2.0` `PHP`
 - [Backdrop CMS](https://backdropcms.org/) - Comprehensive CMS for small to medium sized businesses and non-profits. ([Source Code](https://github.com/backdrop/backdrop)) `GPL-2.0` `PHP`
 - [BigTree CMS](https://www.bigtreecms.org/) - Straightforward, well documented, and capable written with PHP and MySQL. ([Source Code](https://github.com/bigtreecms/BigTree-CMS)) `LGPL-2.1` `PHP`
 - [Bolt CMS](https://bolt.cm/) - Open source Content Management Tool, which strives to be as simple and straightforward as possible. ([Demo](https://try.bolt.cm/), [Source Code](https://github.com/bolt/bolt)) `MIT` `PHP`