Update black, and run auto formatting over the codebase (#9381)

 - Update black version to the latest
 - Run black auto formatting over the codebase
    - Run autoformatting according to [`docs/code_style.md
`](https://github.com/matrix-org/synapse/blob/80d6dc9783aa80886a133756028984dbf8920168/docs/code_style.md)
 - Update `code_style.md` docs around installing black to use the correct version

1 files changed, 6 insertions, 6 deletions

diff --git a/tests/handlers/test_typing.py b/tests/handlers/test_typing.py
index 96e5bdac4a..24e7138196 100644
--- a/tests/handlers/test_typing.py
+++ b/tests/handlers/test_typing.py
@@ -143,14 +143,14 @@ class TypingNotificationsTestCase(unittest.HomeserverTestCase):
         self.datastore.get_current_state_deltas = Mock(return_value=(0, None))
 
         self.datastore.get_to_device_stream_token = lambda: 0
-        self.datastore.get_new_device_msgs_for_remote = lambda *args, **kargs: make_awaitable(
-            ([], 0)
+        self.datastore.get_new_device_msgs_for_remote = (
+            lambda *args, **kargs: make_awaitable(([], 0))
         )
-        self.datastore.delete_device_msgs_for_remote = lambda *args, **kargs: make_awaitable(
-            None
+        self.datastore.delete_device_msgs_for_remote = (
+            lambda *args, **kargs: make_awaitable(None)
         )
-        self.datastore.set_received_txn_response = lambda *args, **kwargs: make_awaitable(
-            None
+        self.datastore.set_received_txn_response = (
+            lambda *args, **kwargs: make_awaitable(None)
         )
 
     def test_started_typing_local(self):