Substitute a11r for ctiller in all OWNERS files
diff --git a/OWNERS b/OWNERS
index 650d58f..33f3198 100644
--- a/OWNERS
+++ b/OWNERS
@@ -13,5 +13,5 @@
 #         lead to a bus factor of one to changes to that code
 @markdroth **/OWNERS
 @nicolasnoble **/OWNERS
-@ctiller **/OWNERS
+@a11r **/OWNERS