Merge pull request #46973 from gauravkghildiyal/kep-4444-beta

Docs update for k8s 1.31 regarding Service trafficDistribution

Author: k8s-ci-robot

content/en/docs/reference/command-line-tools-reference/feature-gates/service-traffic-distribution.md

@@ -10,6 +10,10 @@ stages:
 - stage: alpha 
   defaultValue: false
   fromVersion: "1.30"
+  toVersion: "1.30"
+- stage: beta
+  defaultValue: true
+  fromVersion: "1.31"
 ---
 Allows usage of the optional `spec.trafficDistribution` field in Services. The
 field offers a way to express preferences for how traffic is distributed to