remove homepage link for helpy

- the website does not mention the FOSS edition
- update demo link
- ref. https://github.com/awesome-selfhosted/awesome-selfhosted/issues/2266

README.md

@@ -1975,7 +1975,7 @@ _Related: [Task Management & To-do Lists](#task-management--to-do-lists), [Softw
 - [Flyspray](https://www.flyspray.org/) - Uncomplicated, web-based bug tracking system. ([Source Code](https://github.com/Flyspray/flyspray)) `GPL-2.0` `PHP`
 - [FreeScout](https://github.com/freescout-helpdesk/freescout) - Open source clone of Help Scout: email-based customer support application, help desk and shared mailbox. `AGPL-3.0` `PHP`
 - [GlitchTip](https://glitchtip.com) - Open source error-tracking app. GlitchTip collects errors reported by your app. ([Source Code](https://gitlab.com/glitchtip/glitchtip)) `MIT` `Python`
-- [Helpy](https://helpy.io) - Helpy is a modern, open source helpdesk customer support application. Features include knowledgebase, community discussions and support tickets integrated with email. ([Demo](https://demo.helpy.io), [Source Code](https://github.com/helpyio/helpy)) `MIT` `Ruby`
+- [Helpy](https://github.com/helpyio/helpy) - Helpy is a modern, open source helpdesk customer support application. Features include knowledgebase, community discussions and support tickets integrated with email. ([Demo](https://demo.helpy.io/en)) `MIT` `Ruby`
 - [Iguana](https://github.com/iguana-project/iguana) - Iguana is an open source issue management system with a kanban board. `CC-BY-SA-4.0` `Python/Docker`
 - [ITFlow](https://itflow.org) - Client IT Documentation, Ticketing, Invoicing and Accounting Web Application for MSPs (Managed Service Providers). ([Demo](https://demo.itflow.org), [Source Code](https://github.com/itflow-org/itflow)) `GPL-3.0` `PHP`
 - [MantisBT](https://www.mantisbt.org/) - Self hosted bug tracker, fits best for software development. ([Demo](https://www.mantisbt.org/bugs/my_view_page.php), [Source Code](https://github.com/mantisbt/mantisbt)) `GPL-2.0` `PHP`