[docs] Vocabulary: Using "integral" in library/stdtypes.html (issue 26512)

[storchaka at gmail.com]

http://bugs.python.org/review/26512/diff/16736/Doc/library/stdtypes.rst
File Doc/library/stdtypes.rst (right):

http://bugs.python.org/review/26512/diff/16736/Doc/library/stdtypes.rst#newcode364
Doc/library/stdtypes.rst:364:
+--------------------+------------------------------------+--------+
Remained pluses are not needed. May be this is error.

http://bugs.python.org/review/26512/diff/16736/Doc/library/stdtypes.rst#newcode367
Doc/library/stdtypes.rst:367: | ``math.trunc(x)``  | *x* truncated to
:class:`numbers.Integral`  |
I would write :class:`~numbers.Integral`.

http://bugs.python.org/review/26512/diff/16736/Doc/library/stdtypes.rst#newcode367
Doc/library/stdtypes.rst:367: | ``math.trunc(x)``  | *x* truncated to
:class:`numbers.Integral`  |
I'm wandering, is it possible to make a link from ``math.trunc(x)`` to
the math.trunc() function?

http://bugs.python.org/review/26512/diff/16736/Doc/library/stdtypes.rst#newcode369
Doc/library/stdtypes.rst:369: | ``round(x[, n])``  | *x* rounded to n
digits,                    |
"n" should be emphasized as well as "x": *n*.

http://bugs.python.org/review/26512/