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, 3 insertions, 6 deletions

diff --git a/synapse/rest/admin/media.py b/synapse/rest/admin/media.py
index 8720b1401f..b996862c05 100644
--- a/synapse/rest/admin/media.py
+++ b/synapse/rest/admin/media.py
@@ -119,8 +119,7 @@ class QuarantineMediaByID(RestServlet):
 
 
 class ProtectMediaByID(RestServlet):
-    """Protect local media from being quarantined.
-    """
+    """Protect local media from being quarantined."""
 
     PATTERNS = admin_patterns("/media/protect/(?P<media_id>[^/]+)")
 
@@ -141,8 +140,7 @@ class ProtectMediaByID(RestServlet):
 
 
 class ListMediaInRoom(RestServlet):
-    """Lists all of the media in a given room.
-    """
+    """Lists all of the media in a given room."""
 
     PATTERNS = admin_patterns("/room/(?P<room_id>[^/]+)/media")
 
@@ -180,8 +178,7 @@ class PurgeMediaCacheRestServlet(RestServlet):
 
 
 class DeleteMediaByID(RestServlet):
-    """Delete local media by a given ID. Removes it from this server.
-    """
+    """Delete local media by a given ID. Removes it from this server."""
 
     PATTERNS = admin_patterns("/media/(?P<server_name>[^/]+)/(?P<media_id>[^/]+)")