Merge pull request #13208 from k8s-infra-cherrypick-robot/cherry-pick-13204-to-release-1.12

[release-1.12] 📖 Fix note about CRD contract label in migration doc

Author: k8s-ci-robot

docs/book/src/developer/providers/migrations/v1.10-to-v1.11.md

@@ -2914,13 +2914,13 @@ Implementing the new v1beta2 contract for providers is a multistep operation:
     please note that it is necessary to set the `omitzero` JSON marker
 2. While implementing the changes above, It is also highly recommended to check the implementation of all the other rules
    (documentation for contract rules have been improved in recent releases, worth to take a look!).
-3. Change the CRD annotation that document which Cluster API contract is implemented by your Provider. e.g.
+3. Change the CRD label that documents which Cluster API contract is implemented by your Provider. e.g.
 
 ```yaml
 apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
-  annotations:
+  labels:
     cluster.x-k8s.io/v1beta2: <your API version>
   name: <your CRD name>
 ```