mark KEP-1610 as implemented

Author: carlory

keps/sig-autoscaling/1610-container-resource-autoscaling/kep.yaml

@@ -13,7 +13,7 @@ approvers:
   - "@gjtempleton"
 creation-date: 2020-02-18
 last-updated: 2024-01-15
-status: implementable
+status: implemented
 
 latest-milestone: "1.30"
 stage: "stable"