docs: block: fix dead http link in blk-mq.rst

The current link http://kernel.dk/blk-mq.pdf leads to a 404 error page.
https://www.kernel.dk/blk-mq.pdf leads to the correct document.

v2 to add the missing www. prefix in the actual file change.

Signed-off-by: Jenson Johnathon Reggentin <mail@jregg.de>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260819192422.42189-1-mail@jregg.de>
This commit is contained in:
Jenson Johnathon Reggentin 2026-08-19 21:23:59 +02:00 • committed by Jonathan Corbet
commit b40a680ea4