Add: of-type modifier option in application.yaml (#363)

Co-authored-by: Alejandro Medina <amedina@cens.cl>

src/main/resources/application.yaml

@@ -91,6 +91,7 @@ hapi:
     #    delete_expunge_enabled: true
     #    enable_repository_validating_interceptor: false
     #    enable_index_missing_fields: false
+    #    enable_index_of_type: true
     #    enable_index_contained_resource: false
     ###  !!Extended Lucene/Elasticsearch Indexing is still a experimental feature, expect some features (e.g. _total=accurate) to not work as expected!!
     ###  more information here: https://hapifhir.io/hapi-fhir/docs/server_jpa/elastic.html