mm/damon/sysfs-schemes: fix wrong comment on damons_sysfs_quota_goal_metric_strs

mm/damon/sysfs-schemes: fix wrong comment on damons_sysfs_quota_goal_metric_strs

A comment on damos_sysfs_quota_goal_metric_strs is simply wrong, due to a
copy-and-paste error.  Fix it.

Link: https://lkml.kernel.org/r/20250513002715.40126-3-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Brendan Higgins <brendan.higgins@linux.dev>
Cc: David Gow <davidgow@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>