Fix python naming conventions

Author: ryuta69

sorts/merge_insertion_sort.py

@@ -11,21 +11,21 @@
 """
 
 
-def mergeInsertionSort(collection):
+def merge_insertion_sort(collection):
     """Pure implementation of merge-insertion sort algorithm in Python
 
     :param collection: some mutable ordered collection with heterogeneous
     comparable items inside
     :return: the same collection ordered by ascending
 
     Examples:
-    >>> mergeInsertionSort([0, 5, 3, 2, 2])
+    >>> merge_insertion_sort([0, 5, 3, 2, 2])
     [0, 2, 2, 3, 5]
 
-    >>> mergeInsertionSort([])
+    >>> merge_insertion_sort([])
     []
 
-    >>> mergeInsertionSort([-2, -5, -45])
+    >>> merge_insertion_sort([-2, -5, -45])
     [-45, -5, -2]
     """
 
@@ -100,4 +100,4 @@ def merge(left, right):
 if __name__ == "__main__":
     user_input = input("Enter numbers separated by a comma:\n").strip()
     unsorted = [int(item) for item in user_input.split(",")]
-    print(mergeInsertionSort(unsorted))
+    print(merge_insertion_sort(unsorted))