Using the same "text" as the property name, you need to change it to respective property name if you have a different name. Not changing the type as there are no more child elements in my example.
The next main step is to update the configuration to pick up the overlay file.
Navigate to Config Manager in system console.
update the "Override Element Mapping" setting in the com.adobe.fmdita.config.ConfigManager bundle. It will be empty by default. update it with the path /apps/fmdita/config/elementmapping.xml and save the changes
Now re-generate the site and it should use the AEM component instead of fmdita text component.