The .NET Driver's reference documentation {{{{ < msdnref ...>}}}} short codes seem to link to the outdated AP portal.

E.g.
https://mongodb.github.io/mongo-csharp-driver/2.7/reference/driver/ssl/ links to
https://msdn.microsoft.com/en-us/library/system.net.security.sslstream.aspx
which states
"The .NET API Reference documentation has a new home. Visit the .NET API Browser on docs.microsoft.com to see the new experience"
Under "other versions", the next "latest" version it has is .NET Framework 3.5, with no reference to Standard or Core.

It should probably link to https://docs.microsoft.com/en-us/dotnet/api/system.net.security.sslstream.authenticateasclient?view=netframework-4.7.2.