Fix feature gate WinDSR

Author: tengqm

content/en/docs/reference/command-line-tools-reference/feature-gates/WinDSR.md

@@ -9,5 +9,10 @@ stages:
   - stage: alpha 
     defaultValue: false
     fromVersion: "1.14"
+    toVersion: "1.32"
+  - stage: beta
+    defaultValue: true
+    fromVersion: "1.33"
+
 ---
 Allows kube-proxy to create DSR loadbalancers for Windows.