NO ISSUE - Fix a wrong attribute under platform spec.properties (#663)

We are missing the `flow` attribute under `spec.properties`:

```shell
The SonataFlowPlatform "sonataflow-platform" is invalid: spec.properties: Invalid value: "array": spec.properties in body must be of type object: "array"
```

serverlessworkflow/modules/ROOT/pages/cloud/operator/using-persistence.adoc

@@ -256,7 +256,7 @@ spec:
 
 === Flyway configuration by using SonataFlowPlatForm properties
 
-To apply a common Flyway configuration to all the workflows in a given namespace, you can use the `spec.properties` of the `SonataFlowPlatform` in that namespace.
+To apply a common Flyway configuration to all the workflows in a given namespace, you can use the `spec.properties.flow` of the `SonataFlowPlatform` in that namespace.
 
 .Example of enabling Flyway by using the SonataFlowPlatform properties.
 [source,yaml]
@@ -267,13 +267,14 @@ metadata:
   name: sonataflow-platform
 spec:
   properties:
-    - name: quarkus.flyway.migrate-at-start
-      value: true
+       flow:
+          - name: quarkus.flyway.migrate-at-start
+            value: true
 ----
 
 [NOTE]
 ====
-The configuration above takes effect at workflow deployment time, so you must be sure that property is configured before you deploy your workflows.
+The configuration above takes effect at workflow deployment time, so you must be sure that the property is configured before you deploy your workflows.
 ====
 
 === Manual database initialization by using DDL
@@ -298,4 +299,4 @@ And, by using the `SonataFlow` CR you can enable the persistence of a particular
 * xref:cloud/operator/developing-workflows.adoc[]
 * xref:persistence/core-concepts.adoc[]
 
-include::../../../pages/_common-content/report-issue.adoc[]
+include::../../../pages/_common-content/report-issue.adoc[]