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, 4 insertions, 3 deletions

diff --git a/synapse/handlers/devicemessage.py b/synapse/handlers/devicemessage.py
index 0c7737e09d..1aa7d803b5 100644
--- a/synapse/handlers/devicemessage.py
+++ b/synapse/handlers/devicemessage.py
@@ -62,7 +62,8 @@ class DeviceMessageHandler:
             )
         else:
             hs.get_federation_registry().register_instances_for_edu(
-                "m.direct_to_device", hs.config.worker.writers.to_device,
+                "m.direct_to_device",
+                hs.config.worker.writers.to_device,
             )
 
         # The handler to call when we think a user's device list might be out of
@@ -73,8 +74,8 @@ class DeviceMessageHandler:
                 hs.get_device_handler().device_list_updater.user_device_resync
             )
         else:
-            self._user_device_resync = ReplicationUserDevicesResyncRestServlet.make_client(
-                hs
+            self._user_device_resync = (
+                ReplicationUserDevicesResyncRestServlet.make_client(hs)
             )
 
     async def on_direct_to_device_edu(self, origin: str, content: JsonDict) -> None: