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
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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/check_prop.md

@@ -14,10 +14,7 @@ def check_prop(fn, prop):
 
 ```py
 check_age = check_prop(lambda x: x >= 18, 'age')
-user = {
-  'name': 'Mark',
-  'age': 18
-}
+user = {'name': 'Mark', 'age': 18}
 
 check_age(user) # True
 ```