Update remove-central-administration-site.md

Updated the prereq to Configuration Manager version 2103 or later per email thread with Richard and Yvette.

Author: jasonsandys-microsoft

memdocs/configmgr/core/servers/deploy/install/remove-central-administration-site.md

@@ -61,7 +61,7 @@ If the hierarchy consists of the central administration site (CAS) and a single
 
 ## Prerequisites
 
-- The [latest released version of Configuration Manager current branch](../../manage/updates.md#version-details).
+- Configuration Manager version 2103 or later.
 
 - The administrative user that runs Configuration Manager setup needs the following security rights: