Minor doc fixes.
diff --git a/Lib/test/test_itertools.py b/Lib/test/test_itertools.py
index f69ad26..50c3402 100644
--- a/Lib/test/test_itertools.py
+++ b/Lib/test/test_itertools.py
@@ -1371,8 +1371,8 @@
... return map(function, count(start))
>>> def nth(iterable, n):
-... "Returns the nth item or empty list"
-... return list(islice(iterable, n, n+1))
+... "Returns the nth item or None"
+... return next(islice(iterable, n, None), None)
>>> def quantify(iterable, pred=bool):
... "Count how many times the predicate is true"
@@ -1469,7 +1469,10 @@
[0, 2, 4, 6]
>>> nth('abcde', 3)
-['d']
+'d'
+
+>>> nth('abcde', 9) is None
+True
>>> quantify(range(99), lambda x: x%2==0)
50