fixed a comment

deleted a comment in from shellSort that appeared twice

sorting.py

@@ -114,11 +114,6 @@ def quickSort(lista):
 	and was adapted in order to work for this assigment.
 '''
 
-''' 
-	This algorithm was taken from: https://www.programiz.com/dsa/shell-sort 
-	and was adapted in order to work for this assigment.
-'''
-
 def shellSort(lista):
 	#definan el algoritmo de ordenamiento shellsort