Remove Linux as a supported platform (#757)

* Remove Linux as a supported platform.

* Remove trailing space.

docs/supported-platforms.md

@@ -27,10 +27,7 @@ ms.date: 04/13/2022
 
 ## Additional platform support
 
-.NET MAUI supports other platforms beyond Android, iOS, macOS and Windows:
-
-- Tizen, supported by Samsung.
-- Linux, supported by the community.
+.NET MAUI also includes Tizen support, which is provided by Samsung.
 
 <!-- ## Android platform support