Documentation: cgroup-v2.rst: Correct number of stats entries

Signed-off-by: Han Dapeng <han-dapeng@foxmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst
index 4ef8901..b26b527 100644
--- a/Documentation/admin-guide/cgroup-v2.rst
+++ b/Documentation/admin-guide/cgroup-v2.rst
@@ -1045,7 +1045,7 @@
 	- user_usec
 	- system_usec
 
-	and the following three when the controller is enabled:
+	and the following five when the controller is enabled:
 
 	- nr_periods
 	- nr_throttled