make docs reflect API usage not the fully qualified name
minor issue, but would be nice for consistency

http://pandas.pydata.org/pandas-docs/stable/generated/pandas.io.parsers.read_table.html#pandas.io.parsers.read_table

shows it as `pandas.io.parsers.read_table` but it should be used as `pandas.read_table` and that's how it should appear

this could be a simple sphinx reference label change

FWIW this would probably invalidate a lot of links on SO
