例如：

err := f.SetDocProps(&excelize.DocProperties{
    Category:       "category",
    ContentStatus:  "Draft",
    Created:        "2019-06-04T22:00:10Z",
    Description:    "This file created by Go Excelize",
    Identifier:     "xlsx",
    Keywords:       "Spreadsheet",
    LastModifiedBy: "Go Author",
    Subject:        "Test Subject",
    Title:          "Test Title",
    Language:       "en-US",
})