Update gist link to working one.

README.md

@@ -860,7 +860,7 @@ See https://github.com/n1trux/awesome-sysadmin#monitoring and https://github.com
   * [cryptonote](https://cryptonote.me/) - A simple open source web application that lets users encrypt and share messages that can only be read once. ([Source Code](https://github.com/alainmeier/cryptonote)) `BSD` `Ruby`
   * [CryptPad](https://cryptpad.fr/) - CryptPad is the zero knowledge realtime collaborative editor. ([Source Code](https://github.com/xwiki-labs/cryptpad)) `AGPLv3` `Nodejs`
   * [EdPaste](https://github.com/Edraens/EdPaste) - Self-hosted pastebin written in Laravel (PHP Framework). ([Demo](https://paste.edraens.net/)) `MIT` `PHP`
-  * [gist](https://gitlab.deblan.org/deblan/gist) - GIST is an open-source application to share code. `GPLv3` `PHP`
+  * [gist](https://gitnet.fr/deblan/gist) - GIST is an open-source application to share code. `GPLv3` `PHP`
   * [hastebin](http://hastebin.com/about.md) - Open source pastebin written in node.js. ([Demo](http://hastebin.com/), [Source Code](https://github.com/seejohnrun/haste-server)) `MIT` `Nodejs`
   * [localpaste](https://github.com/petermaloney/localpaste) - Simple python based pastebin you can run locally, with curl for input. Supports RAW text by default and binary data such as images (no extensions on returned url). `GPLv2` `Python`
   * [Modern Paste](https://www.modernpaste.com) - Modern pastebin with a contemporary, minimalistic user interface backed by a robust feature set. ([Demo](https://demo.modernpaste.com/), [Source Code](https://github.com/LINKIWI/modern-paste)) `MIT` `Python`