Format files with Ruff (#17643)

I thought ruff check would also format, but it doesn't.

This runs ruff format in CI and dev scripts. The first commit is just a
run of `ruff format .` in the root directory.

1 files changed, 1 insertions, 2 deletions

diff --git a/synapse/__init__.py b/synapse/__init__.py

index 99ed7a5374..73b92f12be 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -20,8 +20,7 @@
 #
 #
 
-""" This is an implementation of a Matrix homeserver.
-"""
+"""This is an implementation of a Matrix homeserver."""
 
 import os
 import sys