docs/admin-guide/mm: correct typo 'quired' to 'queried'

Convert the word "quired" to the word "queried" which makes more
sense in this context.

Signed-off-by: Daniel Watson <ozzloy@each.do>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/878qymrjrg.fsf@trent-reznor