Graduate ElasticIndexedJob to GA

Author: ahg-g

content/en/docs/concepts/workloads/controllers/job.md

@@ -1004,13 +1004,10 @@ observe that pods from a Job are stuck with the tracking finalizer.
 
 ### Elastic Indexed Jobs
 
-{{< feature-state for_k8s_version="v1.27" state="beta" >}}
+{{< feature-state feature_gate_name="ElasticIndexedJob" >}}
 
 You can scale Indexed Jobs up or down by mutating both `.spec.parallelism` 
-and `.spec.completions` together such that `.spec.parallelism == .spec.completions`. 
-When the `ElasticIndexedJob`[feature gate](/docs/reference/command-line-tools-reference/feature-gates/)
-on the [API server](/docs/reference/command-line-tools-reference/kube-apiserver/)
-is disabled, `.spec.completions` is immutable.
+and `.spec.completions` together such that `.spec.parallelism == .spec.completions`.
 
 Use cases for elastic Indexed Jobs include batch workloads which require 
 scaling an indexed Job, such as MPI, Horovord, Ray, and PyTorch training jobs.

content/en/docs/reference/command-line-tools-reference/feature-gates/elastic-indexed-job.md

@@ -9,6 +9,10 @@ stages:
   - stage: beta
     defaultValue: true
     fromVersion: "1.27"
+    toVersion: "1.30"
+  - stage: stable
+    defaultValue: true
+    fromVersion: "1.31"
 ---
 Enables Indexed Jobs to be scaled up or down by mutating both
 `spec.completions` and `spec.parallelism` together such that `spec.completions == spec.parallelism`.