Apply suggestion from @picnixz

Fix PEP 8 formatting

Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>

Author: Bolotnyj

Lib/test/test_filecmp.py

@@ -415,7 +415,7 @@ def setUp(self):
         Path(dir_file_path).write_text(data, encoding="utf-8")
 
         for d in (self.dir_same, self.dir_same_shallow,
-                self.dir_diff, self.dir_diff_file):
+                  self.dir_diff, self.dir_diff_file):
             Path(d, 'subdir').mkdir(parents=True, exist_ok=True)
             fn = 'FiLe' if (self.caseinsensitive and d == self.dir_same) else 'file'
             file_path = os.path.join(d, fn)