Fix : Lint Error

Author: printjin-gmailcom

valid-palindrome/printjin-gmailcom.py

@@ -1,4 +1,4 @@
 class Solution:
     def isPalindrome(self, s):
         cleaned = [c.lower() for c in s if c.isalnum()]
-        return cleaned == cleaned[::-1]
+        return cleaned == cleaned[::-1]