chore: Update prerequesite for b2b migration tool

Author: silverDuy

products/extensions/b2b-suite-migration/execution/prerequisites.md

@@ -18,3 +18,8 @@ If you are using B2B Commercial and already have data in it, you should back up
 ## Queue Worker
 
 Ensure the message queue worker is running to process migration tasks.
+
+
+## Extension version
+
+Ensure your B2B Suite version is `4.9.3` or above.

products/extensions/b2b-suite-migration/index.md

@@ -16,3 +16,7 @@ This section provides a comprehensive guide for developers to migrate data from
 ::: warning
 B2B Suite will no longer be supported starting Shopware 6.8. Plan your migration promptly to avoid disruptions.
 :::
+
+
+## Prerequisites
+Please refer to the [B2B Suite Migration Prerequisites](./execution/prerequisites) section.