[sledge] Update MAINTAINERS.

TEST=No

Change-Id: Ice9dc8d98b0067ed89d8f609ef606b075d0bb8e6
diff --git a/public/dart/sledge/MAINTAINERS b/public/dart/sledge/MAINTAINERS
index 67f9beb..fd34913 100644
--- a/public/dart/sledge/MAINTAINERS
+++ b/public/dart/sledge/MAINTAINERS
@@ -1,3 +1,3 @@
+ambre@google.com
 jif@google.com
-merkurev@google.com
-
+nellyv@google.com