Update kep.yaml

Add approver/reviewers
Change title

Author: drbugfinder-work

keps/sig-apps/2255-pod-cost/kep.yaml

@@ -1,4 +1,4 @@
-title: Add delete priority annotation for ReplicaSet
+title: Add pod-cost annotation for ReplicaSet
 kep-number: 2255
 authors:
   - "@drbugfinder-work"
@@ -9,11 +9,13 @@ participating-sigs:
 status: provisional
 creation-date: 2021-01-12
 reviewers:
-  - TBD
+  - @ahg-g
+  - @janetkuo
+  - @alculquicondor
 approvers:
-  - TBD
+  - @janetkuo
 prr-approvers:
-  - TBD
+  - @janetkuo
 see-also:
   - https://github.com/kubernetes/kubernetes/issues/45509
   - https://github.com/kubernetes/enhancements/issues/2255