Rename / move 'relationship.type' metadata field to 'dspace.entity.type'

src/app/shared/object-list/my-dspace-result-list-element/item-list-preview/item-list-preview.component.spec.ts

@@ -57,7 +57,7 @@ const mockItemWithEntityType: Item = Object.assign(new Item(), {
         value: 'This is just another title'
       }
     ],
-    'relationship.type': [
+    'dspace.entity.type': [
       {
         language: null,
         value: 'Publication'