Add monicamwang and rayhdez to system/core/libstats/OWNERS

Test: m -j
Bug: N/A
Change-Id: Ifb866dc90818423260c8ff4337edaa2e622d9d56
diff --git a/libstats/OWNERS b/libstats/OWNERS
index d391679..efd3686 100644
--- a/libstats/OWNERS
+++ b/libstats/OWNERS
@@ -1,8 +1,8 @@
 jeffreyhuang@google.com
-jtnguyen@google.com
+monicamwang@google.com
 muhammadq@google.com
+rayhdez@google.com
 sharaienko@google.com
 singhtejinder@google.com
 tsaichristine@google.com
 yaochen@google.com
-yro@google.com