Apply suggestions from code review

Co-Authored-By: Isabelle Viktoria Maciohsek <maciv@hotmail.gr>

snippets/is_contained_in.md

@@ -3,9 +3,11 @@ title: is_contained_in
 tags: list,intermediate
 ---
 
-Returns `True` if the elements of the first λιστ are contained in the second one regardless of order, `False` otherwise.
+Returns `True` if the elements of the first list are contained in the second one regardless of order, `False` otherwise.
+
+
+Use `count()` to check if any value in `a` has more occurences than it has in `b`, returning `False` if any such value is found, `True` otherwise.
 
-Use `count()` to check if any value in `a` has more occurences than it has in `b`, returing `False` if any such value is found, `True` otherwise.
 
 ```py
 def is_contained_in(a, b):

snippets/map_object.md

@@ -3,7 +3,8 @@ title: map_object
 tags: list,intermediate
 ---
 
-Maps the values of a list to a dictionary using a function, where the key-value pairs consist of the value as the key and the mapped value.
+Maps the values of a list to a dictionary using a function, where the key-value pairs consist of the original value as the key and the result of the function as the value.
+
 
 Use a `for` loop to iterate over the list's values, assigning the values produced by `fn` to each key of the dictionary.