[PATCH] Docs/mm/damon/design: fix broken :ref: usage and a typo

[Zenghui Yu <zenghui.yu@linux.dev>]

From: "Zenghui Yu (Huawei)" <zenghui.yu@linux.dev>

The Statistics section refers readers to the DAMON sysfs interface
documentation for how to read the statistics, using a ':ref:' role.
However, the role name has a superfluous 's' appended (':ref:s' instead of
':ref:').  Moreover, its target label 'sysfs_stats' does not exist; the
correct label is 'sysfs_schemes_stats'.  Fix both.

Also fix a typo, 'frequenceis' -> 'frequencies', in the Adaptive Regions
Adjustment section.

Signed-off-by: Zenghui Yu (Huawei) <zenghui.yu@linux.dev>
---
 Documentation/mm/damon/design.rst | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Documentation/mm/damon/design.rst b/Documentation/mm/damon/design.rst
index aed6cb1cf483..08c981c1dd91 100644
--- a/Documentation/mm/damon/design.rst
+++ b/Documentation/mm/damon/design.rst
@@ -249,7 +249,7 @@ For each ``aggregation interval``, it compares the access frequencies
 sum of the two regions' sizes is smaller than the size of total regions divided
 by the ``minimum number of regions``, DAMON merges the two regions.  If the
 resulting number of total regions is still higher than ``maximum number of
-regions``, it repeats the merging with increasing access frequenceis difference
+regions``, it repeats the merging with increasing access frequencies difference
 threshold until the upper-limit of the number of regions is met, or the
 threshold becomes higher than possible maximum value (``aggregation interval``
 divided by ``sampling interval``).   Then, after it reports and clears the
@@ -875,7 +875,7 @@ the scheme is deactivated.  Note that, unlike watermarks, even if a scheme's
 ``nr_snapshots`` reaches ``max_nr_snapshots``, monitoring will not stop.
 
 To know how user-space can read the stats via :ref:`DAMON sysfs interface
-<sysfs_interface>`, refer to :ref:s`stats <sysfs_stats>` part of the
+<sysfs_interface>`, refer to :ref:`stats <sysfs_schemes_stats>` part of the
 documentation.
 
 Regions Walking
-- 
2.53.0