minor doc nit

[rotten]

In the documentation for Table-Columns: http://xlsxwriter.readthedocs.org/working_with_tables.html#columns

The table of sub-properties lists 'format', whereas I believe the correct sub-property is 'header_format'.

Thanks for a really awesome and well documented library!

[jmcnamara]

Thanks, there is an inaccuracy there and I'll fix it.

However, column has sub-properties of header_format and format so both are correct. The header_format is missing from that table though.I'll fix that.

Also, format should really be renamed data_format, especially if a total_format is added at some point.

Thanks,

John