tools: Fix "the the" in a message in kernel-chktaint

There is a double "the" in a message in kernel-chktaint, fix it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210613202059.80403-1-colin.king@canonical.com


Signed-off-by: Jonathan Corbet <corbet@lwn.net>