List of versions simplified

Author: JonPSmith

README.md

@@ -10,8 +10,7 @@ The EfCore.TestSupport library is available on [NuGet as EfCore.TestSupport](htt
 The versions of this library has changed to make it easier to create a new version when a new release of .NET farmework. Now the first number defines the .NET version, e.g EfCore.TestSupport version 8.?.? only runs on .NET 8. 
 
 - Version 8.?.?: Supports NET 8
-- Version 5.2.0: Supports NET 5, 6 and 7
-- Version 5.1.0: Supports NET 5, 6
+- Version 5.2.?: Supports NET 5, 6 and 7
 
 _There are older versions of the EfCore.TestSupport library, but .NET lower than .NET 5 are not supported by Microsoft._