Update 15/umbraco-ui-builder/collections/localization.md

Co-authored-by: Esha Noronha <82437098+eshanrnh@users.noreply.github.com>

Author: acoumb

15/umbraco-ui-builder/collections/localization.md

@@ -42,6 +42,7 @@ treeConfig.AddCollection<Student>(x => x.Id, "#collection_students", "#collectio
 });
 ```
 
+Define the translation in your localization dictionary file:
 ```
 import type { UmbLocalizationDictionary } from "@umbraco-cms/backoffice/localization-api";