Added demo link for minimalist-web-notepad

After reviewing minimalist-web-notepad's git project a demo was identified, I have added this link to it's entry

README.md

@@ -1095,7 +1095,7 @@ See https://github.com/n1trux/awesome-sysadmin#monitoring and https://github.com
 - [Leanote](http://leanote.org/) - Leanote, Not Just A Notepad! Open source cloud notepad. ([Demo](https://leanote.com/note), [Source Code](https://github.com/leanote/leanote)) `GPL-2.0` `Go`
 - [Markdown Edit](http://georgeosddev.github.com/markdown-edit/) - Online markdown editor/viewer. ([Source Code](https://github.com/georgeOsdDev/markdown-edit)) `MIT` `HTML5`
 - [Meemo](https://meemo.minimal-space.de/) - Personal notes stream with Markdown support. ([Source Code](https://github.com/nebulade/meemo)) `MIT` `Nodejs`
-- [minimalist-web-notepad](https://github.com/pereorga/minimalist-web-notepad) - Minimalist notepad.cc clone. `Apache-2.0` `PHP`
+- [minimalist-web-notepad](https://github.com/pereorga/minimalist-web-notepad) - Minimalist notepad.cc clone. ([Demo](https://notes.orga.cat/)) `Apache-2.0` `PHP`
 - [MiniNote](https://github.com/n1try/mininote) - Simple Markdown note-taking app with persistence. `MIT` `Nodejs`
 - [OpenNote](https://github.com/FoxUSA/OpenNote) - OpenNote was built to be an open web-based alternative to Microsoft OneNote (T) and EverNote. ([Demo](https://foxusa.github.io/OpenNote/OpenNote/#/folder)) `MIT` `HTML5`
 - [Overleaf](https://www.overleaf.com/) - Web-based collaborative LaTeX editor. ([Source Code](https://github.com/overleaf/overleaf)) `AGPL-3.0` `Ruby`