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

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

Author: pre-commit-ci[bot]

strings/is_palindrome.py

@@ -2,6 +2,7 @@ def is_palindrome(s: str) -> bool:
     s = s.lower().replace(" ", "")
     return s == s[::-1]
 
+
 if __name__ == "__main__":
     print(is_palindrome("madam"))  # True
     print(is_palindrome("hello"))  # False