Refactor flash_sort.py to resolve Ruff check errors

Author: yashleo

sorts/flash_sort.py

@@ -39,7 +39,6 @@ def flash_sort(self) -> None:
         >>> arr = [2, 2, 2]
         >>> sorter = FlashSort(arr, n_classes=2)
         >>> sorter.flash_sort()
-        >>> arr
         [2, 2, 2]
         """
         if self.n <= 1:
@@ -97,4 +96,4 @@ def flash_sort(self) -> None:
         unsorted = [int(item.strip()) for item in user_input.split(",")]
     sorter = FlashSort(unsorted, n_classes=5)
     sorter.flash_sort()
-    print(unsorted)
+    print(unsorted)