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/rest/client/v1/test_events.py b/tests/rest/client/v1/test_events.py

index 852bda408c..2789d51546 100644
--- a/tests/rest/client/v1/test_events.py
+++ b/tests/rest/client/v1/test_events.py
@@ -23,7 +23,7 @@ from tests import unittest
 
 
 class EventStreamPermissionsTestCase(unittest.HomeserverTestCase):
-    """ Tests event streaming (GET /events). """
+    """Tests event streaming (GET /events)."""
 
     servlets = [
         events.register_servlets,