Add additional note on how to add new dashboards

Author: J12934

persistence/persistence-elastic/dashboardImporter/readme.md

@@ -5,7 +5,7 @@ This comes pre-bundled as a kubernetes job. If you install the Elastic Persisten
 
 ## Updating the Kibana Dashboards
 
-If you made changes to the Kibana Dashboards which you want rolled out to everybody, you can update the dashboards in the [dashboards](./dashboards/) folder. To update the easily you can use the [export-dashboards](./export-dashboards.sh) bash script.
+If you made changes to the Kibana Dashboards which you want rolled out to everybody, you can update the dashboards in the [dashboards](./dashboards/) folder. To update the easily you can use the [export-dashboards](./export-dashboards.sh) bash script. If you added a new dashboard you'll need to update the script to create a mapping between filename and dashboard id.
 
 ```bash
 # Default call. Assumes Kibana to be available at "http://localhost:5601"