Improved the docstrings

Aufgabe02.py

@@ -5,7 +5,7 @@ def HeapSort(array):
 
     Parameters
     ----------
-    array: list(*int)
+    array: list[int]
         a list containing the integers to be sorted
 
     Returns
@@ -55,7 +55,7 @@ def InsertionSort(array):
 
     Parameters
     ----------
-    array: list(*int)
+    array: list[int]
         a list containing the intergers to be sorted
 
     Returns
@@ -79,8 +79,8 @@ def CountingSort(array, k=None):
 
     Parameters
     ----------
-    array: list(*int)
-        a list containing the intergers to be sorted
+    array: list[int]
+        a list containing the (positive) intergers to be sorted
 
     Returns
     -------