Camera: Update OWNERS file.

Change-Id: Ic795557dd26feed07370e106283bca3d7abdb818
diff --git a/camera/OWNERS b/camera/OWNERS
index d6b95da..47d1d19 100644
--- a/camera/OWNERS
+++ b/camera/OWNERS
@@ -2,7 +2,7 @@
 etalvala@google.com
 jchowdhary@google.com
 shuzhenwang@google.com
-yinchiayeh@google.com
+ruchamk@google.com
 # backup owner
 cychen@google.com
 zhijunhe@google.com