Apply suggestions from code review

Co-authored-by: Alex Parker <[email protected]>

Author: paigecalvert

docs/reference/custom-resource-backup.md

@@ -51,7 +51,7 @@ spec:
                 - -a
               onError: Fail
               timeout: 10s
-        post:
+        post: []
 ```
 
 ## Supported Fields for Full Backups with Snapshots {#fields}

docs/vendor/embedded-disaster-recovery.mdx

@@ -23,7 +23,7 @@ The Embedded Cluster infrastructure that is backed up includes components such a
 Embedded Cluster disaster recovery has the following requirements:
 
 * The disaster recovery feature flag must be enabled for your account. To get access to disaster recovery, reach out to Alex Parker at [[email protected]](mailto:[email protected]).
-* Embedded Cluster version **X.X.X** or later
+* Embedded Cluster version 1.22.0 or later
 * Backups must be stored in S3-compatible storage
 
 ## Limitations and Known Issues