search_in_trash_reference.md: Note about DateMetadata::TRASHED

Author: adriendupuis

docs/search/search_in_trash_reference.md

@@ -6,13 +6,13 @@ page_type: reference
 # Search in trash reference
 
 When you [search for content items that are held in trash](search_api.md#searching-in-trash), you can apply only a limited subset of Search Criteria and Sort Clauses
-which can be used by `Ibexa\Contracts\Core\Repository\TrashService::findTrashItems`.
+which can be used by [`Ibexa\Contracts\Core\Repository\TrashService::findTrashItems`](../api/php_api/php_api_reference/classes/Ibexa-Contracts-Core-Repository-TrashService.html#method_findTrashItems).
 Some sort clauses are exclusive to trash search.
 
 ## Search Criteria
 
 - [ContentTypeId](contenttypeid_criterion.md)
-- [DateMetadata](datemetadata_criterion.md)
+- [DateMetadata](datemetadata_criterion.md) (which can use the additional exclusive target `DateMetadata::TRASHED`)
 - [MatchAll](matchall_criterion.md)
 - [MatchNone](matchnone_criterion.md)
 - [SectionId](sectionid_criterion.md)