Update summary table at the top of the docs

Author: rhettinger

Doc/library/itertools.rst

@@ -52,7 +52,7 @@ Iterator            Arguments               Results
 Iterator                        Arguments                       Results                                             Example
 ============================    ============================    =================================================   =============================================================
 :func:`accumulate`              p [,func]                       p0, p0+p1, p0+p1+p2, ...                            ``accumulate([1,2,3,4,5]) --> 1 3 6 10 15``
-:func:`batched`                 p, n                            [p0, p1, ..., p_n-1], ...                           ``batched('ABCDEFG', n=3) --> ABC DEF G``
+:func:`batched`                 p, n                            (p0, p1, ..., p_n-1), ...                           ``batched('ABCDEFG', n=3) --> ABC DEF G``
 :func:`chain`                   p, q, ...                       p0, p1, ... plast, q0, q1, ...                      ``chain('ABC', 'DEF') --> A B C D E F``
 :func:`chain.from_iterable`     iterable                        p0, p1, ... plast, q0, q1, ...                      ``chain.from_iterable(['ABC', 'DEF']) --> A B C D E F``
 :func:`compress`                data, selectors                 (d[0] if s[0]), (d[1] if s[1]), ...                 ``compress('ABCDEF', [1,0,1,0,1,1]) --> A C E F``