Fix my lazy typos.

Change-Id: I21df59fb83d3caf3e006dcdec02bdac126b7f208
diff --git a/inc/hf/arch/barriers.h b/inc/hf/arch/barriers.h
index a22d1d1..f7ef46e 100644
--- a/inc/hf/arch/barriers.h
+++ b/inc/hf/arch/barriers.h
@@ -23,7 +23,7 @@
 void dmb(void);
 
 /**
- * Ensure all explicit memory access and management instructions have completed
+ * Ensures all explicit memory access and management instructions have completed
  * before continuing.
  */
 void dsb(void);