Apply suggestions from code review

Author: holtskinner

discoveryengine/documents_sample_test.py

@@ -15,12 +15,12 @@
 
 import os
 
-import pytest
-
 from discoveryengine import import_documents_sample
 from discoveryengine import list_documents_sample
 from discoveryengine import purge_documents_sample
 
+import pytest
+
 project_id = os.environ["GOOGLE_CLOUD_PROJECT"]
 location = "global"
 data_store_id = "test-structured-data-engine"