There is an existing feature-request, Allow another close vote after retraction, that is marked as completed. Per that request, it is now possible to vote to close a question again after retracting a previous close vote.
However, when I retracted close vote, I still get a warning that voting to close again will not be allowed.
If removing retract restriction was indeed completed, the warning should be removed from retract close message (if message is needed at all?).
Update from the answers: the retract restriction has not been removed, but was limited for 14 days due to some other site changes. The message is not precisely correct. It should state that voting again will be allowed after 14 days.
If As the allow-another-close-vote-after-retraction has not been completed, the feature request Allow another close vote after retraction should be updated and considered for implementation.