update black to 21.6b0 (#10197)

Reformat all files with the new version.

Signed-off-by: Marcus Hoffmann <bubu@bubu1.eu>

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/storage/test_base.py b/tests/storage/test_base.py

index 3b45a7efd8..ddad44bd6c 100644
--- a/tests/storage/test_base.py
+++ b/tests/storage/test_base.py
@@ -27,7 +27,7 @@ from tests.utils import TestHomeServer, default_config
 
 
 class SQLBaseStoreTestCase(unittest.TestCase):
-    """ Test the "simple" SQL generating methods in SQLBaseStore. """
+    """Test the "simple" SQL generating methods in SQLBaseStore."""
 
     def setUp(self):
         self.db_pool = Mock(spec=["runInteraction"])