Seems to be a Bug guy's. Is it still there if you access your account from mobile?
I can confirm that there is no document request in your accounts. Can you try deleting cookies and trying another browser please?
Let me know how it goes.
As you say yourself, the message shows even when you're not logged in. Obviously a bug, and if there're no pending request on the documents verification page, you can just ignore it
Last time when I ignored it the already verified message was a bug not the account verification request. Just Saying.