Merge pull request kubernetes#2790 from shu-mutou/sig-ui-leads

Add shu-mutou to sig-ui-leads

Author: k8s-ci-robot

OWNERS_ALIASES

@@ -90,8 +90,8 @@ aliases:
     - stevekuznetsov
   sig-ui-leads:
     - floreks
-    - jeefy
     - maciaszczykm
+    - shu-mutou
   sig-usability-leads:
     - hpandeycodeit
     - tashimi