chore(tooling): change ruff format's flag from --diff to --check in tox.ini (#1838)

Co-authored-by: danceratopz <danceratopz@gmail.com>

Author: felix314159

tox.ini

@@ -22,7 +22,7 @@ description = Lint and code formatting checks (ruff)
 extras = lint
 commands =
     ruff check --no-fix --show-fixes {[testenv]python_source_dirs}
-    ruff format --diff {[testenv]python_source_dirs}
+    ruff format --check {[testenv]python_source_dirs}
 
 [testenv:typecheck]
 description = Run type checking (mypy)
@@ -58,7 +58,7 @@ setenv =
     DYLD_FALLBACK_LIBRARY_PATH = /opt/homebrew/lib
 commands = 
     ruff check --no-fix --show-fixes docs/scripts
-    ruff format --diff docs/scripts
+    ruff format --check docs/scripts
     mkdocs build --strict
 
 [testenv:pytest]