Multiple use of the phrase "you know what you are doing" does not increase its effect but rather makes it noisy instead. Since it is warned with capitalized "DO NOT", it is enough.

Also replace the order to check in at the upstream with the recommendation, as it is inconsistent for this project overall to ask users to do so. It is not sensible to make an exception for Draupnir.

Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>