recover reference to Horizon Computing

Signed-off-by: Daniel Maslowski <info@orangecms.org>

Author: orangecms

content/_index.md

@@ -65,6 +65,6 @@ The following are just a subset of the organizations and people ivolved.
 
 * [Google](http://www.google.com)
 * [Facebook](http://www.facebook.com)
-* [Horizon Computing](http://www.horizon-computing.com)
+* [Horizon Computing Solutions](https://web.archive.org/web/20160912124237/http://www.horizon-computing.com/) ([acquired by IT Renew](https://web.archive.org/web/20180626024709/https://www.businesswire.com/news/home/20180611005362/en/ITRenew-Acquires-Splitted-Desktop-Systems-SDS/) (in turn [acquired by Iron Mountain](https://www.ironmountain.com/about-us/newsroom/press-releases/2022/january/iron-mountain-closes-acquisition-of-itrenew) ([archived](https://web.archive.org/web/20230604043313/https://www.ironmountain.com/about-us/newsroom/press-releases/2022/january/iron-mountain-closes-acquisition-of-itrenew))))
 * [Two Sigma](http://www.twosigma.com)
 * [9elements Cyber Security](http://www.9elements.com/cyber-security)