Merge pull request #370 from kaosine/readme-update-upstream-sunset [skip ci]

Author: aminya

README.md

@@ -2,7 +2,7 @@
 
 [![Build status](https://dev.azure.com/github/Atom/_apis/build/status/Atom%20Production%20Branches?branchName=master)](https://dev.azure.com/github/Atom/_build/latest?definitionId=32&branchName=master)
 
-> Atom and all repositories under Atom will be archived on December 15, 2022. Learn more in our [official announcement](https://github.blog/2022-06-08-sunsetting-atom/)
+> Due to upstream changes, [Atom and all repositories under the original Atom branding will be archived on December 15, 2022](https://github.blog/2022-06-08-sunsetting-atom/). Get involved here and at [the discord](https://discord.gg/deuBJaqVud) while we work on the future of Atom-community.
 
 Atom is a hackable text editor for the 21st century, built on [Electron](https://github.com/electron/electron), and based on everything we love about our favorite editors. We designed it to be deeply customizable, but still approachable using the default configuration.