Merge pull request #42328 from mcameron/patch-1

Update storage-classes.md

Author: k8s-ci-robot

content/en/docs/concepts/storage/storage-classes.md

@@ -235,7 +235,7 @@ parameters:
 volumeBindingMode: WaitForFirstConsumer
 allowedTopologies:
 - matchLabelExpressions:
-  - key: failure-domain.beta.kubernetes.io/zone
+  - key: topology.kubernetes.io/zone
     values:
     - us-central-1a
     - us-central-1b