change Riot.im to Element

README.md

@@ -49,9 +49,9 @@ Links**](./hardware.md)
   - [**Rambox**](https://rambox.pro/)  
     Workspace browser that allows you to manage as many applications as
     you want
-  - [**Riot**](https://riot.im/)  
-    Universal secure chat app entirely under your control, based on the
-    **Matrix** protocol
+  - [**Element**](https://element.io/)  
+    All-in-one secure chat app for teams, friends and organisations,
+    based on the **Matrix** protocol
 
 ### File Synchronisation