Update README.md (#1342)

removed FB link, update Twitter name to "X, formerly Twitter"

Author: mdsandu

README.md

@@ -15,8 +15,7 @@ This repository is home to all Ghostery Browser Extensions for various platforms
 + [Website](https://www.ghostery.com/)
 + [Broken Page Reports](https://github.com/ghostery/broken-page-reports/)
 + [Support](https://www.ghostery.com/support)
-+ [Twitter (@ghostery)](https://twitter.com/ghostery)
-+ [Facebook](https://www.facebook.com/ghostery)
++ [X, formerly Twitter (@ghostery)](https://twitter.com/ghostery)
 + [Privacy Policy](https://www.ghostery.com/about-ghostery/browser-extension-privacy-policy/)
 
 ## Additional Open Source Ghostery Projects