[docs] str.translate documentation incomplete (issue 21279)

http://bugs.python.org/review/21279/diff/11671/Doc/library/stdtypes.rst File Doc/library/stdtypes.rst (right): http://bugs.python.org/review/21279/diff/11671/Doc/library/stdtypes.rst#newc... Doc/library/stdtypes.rst:1914: for instance a dictionary or or a list, mapping Unicode ordinals (integers) “or or a list”: Just one “or” should get the point across :) http://bugs.python.org/review/21279/