Update CODEOWNERS (#361)

* Update CODEOWNERS

* Add xj-ms

---------

Co-authored-by: Tristan Gibeau <41077386+trgibeau@users.noreply.github.com>

.github/CODEOWNERS

@@ -1,4 +1,4 @@
 # Users referenced in this file will automatically be requested as reviewers for PRs that modify the given paths.
 # See https://help.github.com/articles/about-code-owners/
 
-* @anramanath @jmaxson-ms @mslukebo @trgibeau @yesiam0 @helenkzhang
+* @jmaxson-ms @mslukebo @trgibeau @helenkzhang @xj-ms