feat(ins): add information

Author: bene2k1

pages/instances/reference-content/migrating-vms-vmware-scaleway.mdx

@@ -135,6 +135,7 @@ Upload the converted disk:
     ```bash
     scw instance image create snapshot-id="$SCW_VOLUME_ID_1" additional-volumes.0.id="$SCW_VOLUME_ID_2" arch="x86_64"
     ```
+    Refer to the [CLI documentation](https://cli.scaleway.com/instance/#create-an-instance-image) for further information.
   </Message>
 
 3. Create the server from the image: