Hi again Sid,
Welcome to the community!
As I mentioned in your other post (which I saw first) 6.5 is waaay past EOL. Among other things, that means that it no longer appears in the Plugin Version Matrix, which is actually a dynamic doc, even in archived versions of the documentation. So even if I dug up the link to the 6.5 docs for you, it would contain the same Plugin Version Matrix you’re seeing in the current docs.
As I said in your other thread, you really, really need to upgrade.
Ann