doc: cgroups: Fix typo in doc/cgroups

Correct spelling typo in memory.txt and
resource_counter.txt

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
diff --git a/Documentation/cgroups/resource_counter.txt b/Documentation/cgroups/resource_counter.txt
index c4d99ed..52e1da1 100644
--- a/Documentation/cgroups/resource_counter.txt
+++ b/Documentation/cgroups/resource_counter.txt
@@ -97,8 +97,8 @@
 		(struct res_counter *rc, struct res_counter *top,
 		 unsinged long val)
 
-	Almost same as res_cunter_uncharge() but propagation of uncharge
-	stops when rc == top. This is useful when kill a res_coutner in
+	Almost same as res_counter_uncharge() but propagation of uncharge
+	stops when rc == top. This is useful when kill a res_counter in
 	child cgroup.
 
  2.1 Other accounting routines