Doc/damon: fix the data path error

%s/modules/module/

Signed-off-by: Hui Su <suhui_kernel@163.com>
Reviewed-by: Alex Shi <alexsshi@kernel.org>
Reviewed-by: SeongJae Park <sj@kernel.org>
Link: https://lore.kernel.org/r/Y9Tm1FiKBPKA2Tcx@localhost.localdomain


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