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

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

Author: pre-commit-ci[bot]

sorts/shell_sort.py

@@ -2,6 +2,7 @@
 https://en.wikipedia.org/wiki/Shellsort#Pseudocode
 """
 
+
 def shell_sort(collection: list[int]) -> list[int]:
     """
     Sort a list of integers using the Shell Sort algorithm.
@@ -27,4 +28,4 @@ def shell_sort(collection: list[int]) -> list[int]:
                 j -= gap
             collection[j] = insert_value
 
-    return collection
+    return collection