Update links

Author: dend

README.md

@@ -83,7 +83,7 @@ Taiga is a project management tool for multi-functional agile teams. It has a ri
 | Property  | Value                                                    |
 |-----------|----------------------------------------------------------|
 | Developer | [Kaleidos](https://kaleidos.net/)                        |
-| Cost      | Free (self-hosted) or [Freemium](https://tree.taiga.io/) |
+| Cost      | Free (self-hosted) or [Freemium](https://taiga.io/) |
 | Platform  | macOS, Windows, iOS, Android, Web                        |
 | URL       | https://tree.taiga.io                                    |