Updated Goodwork Demo

Goodwork demo was dead as identified in Issue2266, updated with link to github project page which provides a further link to a demo and credentials to access it.

Similiarly updated Ethercalc's url as it has been updated (source for new url was github project)

README.md

@@ -1111,7 +1111,7 @@ See https://github.com/n1trux/awesome-sysadmin#monitoring and https://github.com
 
 - [ Collabora Online Development Edition](https://www.collaboraoffice.com/code) - Collabora Online Development Edition (CODE) is a powerful LibreOffice-based online office that supports all major document, spreadsheet and presentation file formats, which you can integrate in your own infrastructure. ([Source Code](https://cgit.freedesktop.org/libreoffice/online/)) `MPL-2.0` `C++`
 - [CryptPad](https://cryptpad.fr/) - CryptPad is the zero knowledge realtime collaborative editor (rich-text, files, source-code, ...). ([Source Code](https://github.com/xwiki-labs/cryptpad)) `AGPL-3.0` `Nodejs`
-- [EtherCalc](https://ethercalc.org/) - Web spreadsheet. ([Source Code](https://github.com/audreyt/ethercalc)) `CPAL-1.0/Other` `Nodejs`
+- [EtherCalc](https://ethercalc.net/) - Web spreadsheet. ([Source Code](https://github.com/audreyt/ethercalc)) `CPAL-1.0/Other` `Nodejs`
 - [Etherpad](http://etherpad.org/) - Etherpad is a highly customizable Open Source online editor providing collaborative editing in really real-time. ([Demo](https://demo.sandstorm.io/appdemo/h37dm17aa89yrd8zuqpdn36p6zntumtv08fjpu8a8zrte7q1cn60), [Source Code](https://github.com/ether/etherpad-lite)) `Apache-2.0` `Nodejs`
 - [Infinoted](https://github.com/gobby/gobby/wiki/Dedicated%20Server) - Server for [Gobby](https://github.com/gobby/gobby/wiki), a multi-platform collaborative text editor. ([Source Code](https://github.com/gobby/gobby)) `MIT` `C++`
 - [ONLYOFFICE](https://helpcenter.onlyoffice.com/faq/server-opensource.aspx) - Office suite that enables you to manage documents, projects, team and customer relations in one place. ([Source Code](https://github.com/ONLYOFFICE/DocumentServer)) `AGPL-3.0` `Nodejs`
@@ -1305,7 +1305,7 @@ _See also [Ticketing](#ticketing), [Task management/To-do lists](#task-managemen
 
 - [Bonobo Git Server](https://bonobogitserver.com/) - Set up your own self hosted git server on IIS for Windows. Manage users and have full control over your repositories with a nice user friendly graphical interface. ([Source Code](https://github.com/jakubgarfield/Bonobo-Git-Server)) `MIT` `C#`
 - [Fossil](https://www.fossil-scm.org/index.html/doc/trunk/www/index.wiki) - Distributed version control system featuring wiki and bug tracker. `BSD-2-Clause-FreeBSD` `C`
-- [Goodwork](https://github.com/iluminar/goodwork) - Self hosted project management and collaboration tool powered by Laravel & VueJS. ([Demo](https://goodworkfor.life/)) `MIT` `PHP`
+- [Goodwork](https://github.com/iluminar/goodwork) - Self hosted project management and collaboration tool powered by Laravel & VueJS. ([Demo](https://github.com/iluminar/goodwork#demo)) `MIT` `PHP`
 - [Gitblit](http://gitblit.com/) - Pure Java stack for managing, viewing, and serving Git repositories. ([Source Code](https://github.com/gitblit/gitblit)) `Apache-2.0` `Java`
 - [gitbucket](https://gitbucket.github.io/gitbucket-news/) - Easily installable GitHub clone powered by Scala. ([Source Code](https://github.com/gitbucket/gitbucket)) `Apache-2.0` `Scala/Java`
 - [Gitea](https://gitea.io) - Community managed fork of Gogs, lightweight code hosting solution. ([Demo](https://try.gitea.io), [Source Code](https://github.com/go-gitea/gitea)) `MIT` `Go`