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

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

Author: pre-commit-ci[bot]

bit_manipulation/binary_swap_bits.py

@@ -52,4 +52,4 @@ def swap_bits(number: int, i: int, j: int) -> int:
 if _name_ == "_main_":
     import doctest
 
-    doctest.testmod()
+    doctest.testmod()