chore: some lint fixes [(#3740)](GoogleCloudPlatform/python-docs-samples#3740)

Takashi Matsuo · web-flow · commit bad127ca543b · 2020-05-12T15:25:01.000-07:00
diff --git a/samples/quickstart_happybase/main_test.py b/samples/quickstart_happybase/main_test.py
@@ -20,6 +20,7 @@
 
 from main import main
 
+
 PROJECT = os.environ['GCLOUD_PROJECT']
 BIGTABLE_INSTANCE = os.environ['BIGTABLE_INSTANCE']
 TABLE_ID_FORMAT = 'quickstart-hb-test-{}'
