Convert formatting to use ruff instead of yapf + isort (#26247)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>

docs/mkdocs/hooks/remove_announcement.py

@@ -7,7 +7,7 @@ from typing import Literal
 
 def on_startup(command: Literal["build", "gh-deploy", "serve"], dirty: bool):
     # see https://docs.readthedocs.io/en/stable/reference/environment-variables.html # noqa
-    if os.getenv('READTHEDOCS_VERSION_TYPE') == "tag":
+    if os.getenv("READTHEDOCS_VERSION_TYPE") == "tag":
         # remove the warning banner if the version is a tagged release
         mkdocs_dir = Path(__file__).parent.parent
         announcement_path = mkdocs_dir / "overrides/main.html"