Fixed typo in test output.
Fixed typo in test output.

Issue #245.

gechong/XlsxWriter,jmcnamara/XlsxWriter,jvrsantacruz/XlsxWriter,mdeemer/XlsxWriter,gechong/XlsxWriter,applicationdevm/XlsxWriter,seize-the-dave/XlsxWriter,yaojingwu1992/XlsxWriter,applicationdevm/XlsxWriter,jvrsantacruz/XlsxWriter,jmcnamara/XlsxWriter,mdeemer/XlsxWriter,jkyeung/XlsxWriter,jkyeung/XlsxWriter,jmcnamara/XlsxWriter,jmcnamara/XlsxWriter,applicationdevm/XlsxWriter,Thhhza/XlsxWriter,seize-the-dave/XlsxWriter,jvrsantacruz/XlsxWriter,jkyeung/XlsxWriter,gechong/XlsxWriter,gechong/XlsxWriter,liukaijv/XlsxWriter,yaojingwu1992/XlsxWriter,yaojingwu1992/XlsxWriter,liukaijv/XlsxWriter,yaojingwu1992/XlsxWriter,seize-the-dave/XlsxWriter,seize-the-dave/XlsxWriter,applicationdevm/XlsxWriter,Thhhza/XlsxWriter,mdeemer/XlsxWriter,Thhhza/XlsxWriter,Thhhza/XlsxWriter,mdeemer/XlsxWriter,liukaijv/XlsxWriter,jkyeung/XlsxWriter,jvrsantacruz/XlsxWriter,liukaijv/XlsxWriter