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

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

Author: pre-commit-ci[bot]

sorts/insertion_sort.py

@@ -49,7 +49,7 @@ def insertion_sort[T: Comparable](collection: MutableSequence[T]) -> MutableSequ
     >>> collection = random.choices(string.ascii_letters + string.digits, k=100)
     >>> insertion_sort(collection) == sorted(collection)
     True
-    
+
     Time Complexity: (O(n^2))
     Space Complexity:(O(n))
     """

sorts/pancake_sort.py

@@ -23,7 +23,7 @@ def pancake_sort(arr: MutableSequence[int]) -> MutableSequence[int]:
     []
     >>> pancake_sort([-2, -5, -45])
     [-45, -5, -2]
-    
+
     Time Complexity: O(n^2)
     Space Complexity: O(n)
     """
@@ -38,6 +38,8 @@ def pancake_sort(arr: MutableSequence[int]) -> MutableSequence[int]:
         cur -= 1
     return arr
 
+
 if __name__ == "__main__":
     import doctest
+
     doctest.testmod()