[docs] include the "object" type in the lists of documented types (issue 16508)

[vadmium+py at gmail.com]

https://bugs.python.org/review/16508/diff/15301/Doc/reference/datamodel.rst
File Doc/reference/datamodel.rst (right):

https://bugs.python.org/review/16508/diff/15301/Doc/reference/datamodel.rst#newcode1095
Doc/reference/datamodel.rst:1095: cls).__new__(cls[, ...])`` with
appropriate arguments and then modify the
Eugh, the original was more correct. Perhaps I should simplify this into
two sentences or something.

https://bugs.python.org/review/16508/