chore: some lint fixes [(#3751)](GoogleCloudPlatform/python-docs-samples#3751)

* chore: some lint fixes

* longer timeout, more retries

* disable detect_test.py::test_async_detect_document

Author: Takashi Matsuo

samples/snippets/translate_v3_batch_translate_text_with_model_test.py

@@ -13,10 +13,13 @@
 # limitations under the License.
 
 import os
-import pytest
 import uuid
-import translate_v3_batch_translate_text_with_model
+
 from google.cloud import storage
+import pytest
+
+import translate_v3_batch_translate_text_with_model
+
 
 PROJECT_ID = os.environ["GCLOUD_PROJECT"]
 MODEL_ID = "TRL3128559826197068699"