rename to a clearer name

crates/index-scheduler/src/test_utils.rs

@@ -197,7 +197,7 @@ pub(crate) fn replace_document_import_task(
         content_file: Uuid::from_u128(content_file_uuid),
         documents_count,
         allow_index_creation: true,
-        document_creation_policy: Default::default(),
+        on_missing_document: Default::default(),
     }
 }