fixing small typo

abranhe · web-flow · commit ee3e0ccc627c · 2019-10-05T22:56:10.000-04:00
diff --git a/tests/test_sorting.py b/tests/test_sorting.py
@@ -9,7 +9,7 @@
     stooge_sort,
     cocktail_shaker_sort,
     tree_sort,
-    heap_sort
+    heap_sort,
     shell_sort,
 )
 
