Update hosting-companies.md

Added netsite.dk

Author: reupke

hosting-companies.md

@@ -59,6 +59,7 @@ In alphabetical order:
 * [MonsterMegs](https://www.monstermegs.com)
 * [NameHero](https://www.namehero.com)
 * [NearlyFreeSpeech.NET](https://www.nearlyfreespeech.net/)
+* [Netsite](https://www.netsite.dk/)
 * [Netzadresse.at](https://netzadresse.at/)
 * [Nexcess.Net](https://www.nexcess.net/)
 * [Oderland Hosting Services](https://www.oderland.com/)