Update formatting

Update formatting in every_nth
Update formatting in shuffle
Update formatting in has_duplicates
Update formatting in group_by
Update formatting in sum_by
Update formatting in zip
Update formatting in longest_item
Update formatting in bifurcate_by
Update formatting in difference_by
Update formatting in clamp_number
Update formatting in min_by
Update formatting in max_by
Update formatting in union
Update formatting in n_times_string
Update formatting in check_prop
Update formatting in chunk
Update formatting in transpose
Update formatting in bifurcate
Update formatting in union_by
Update formatting in initialize_list_with_range
Update formatting in most_frequent

snippets/bifurcate.md

@@ -11,8 +11,8 @@ Use list comprehension and `enumerate()` to add elements to groups, based on `fi
 ```py
 def bifurcate(lst, filter):
   return [
-    [x for i,x in enumerate(lst) if filter[i] == True],
-    [x for i,x in enumerate(lst) if filter[i] == False]
+    [x for i, x in enumerate(lst) if filter[i] == True],
+    [x for i, x in enumerate(lst) if filter[i] == False]
   ]
 ```