[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

data_structures/binary_tree/red_black_tree.py

@@ -268,9 +268,10 @@ def remove(self, label: int) -> RedBlackTree:
         elif self.right:
             self.right.remove(label)
         return self.parent or self
-                # It's easier to balance a node with at most one child, 
-                 # so we replace this node with the greatest one less than 
-                 # it and remove that.
+        # It's easier to balance a node with at most one child,
+        # so we replace this node with the greatest one less than
+        # it and remove that.
+
     def _remove_repair(self) -> None:
         """Repair the coloring after removal."""
         if (