iTin Export Engine (ITEE). Is a standalone engine for data export of XML, DataSets, typed ArrayList, DataRow array inputs by native/custom writers to MS Excel, Comma-Separated Values (csv), Tab-Separated Values (txt), SQL Script (sql), XML Spreadsheet 2003 (xml), Portable Document Format (pdf), MS Excel (xlsx), MS Word (docx), using an XML configuration file or by code
It seems that your code has a dependency on https://github.com/xceedsoftware/DocX, which states to be under the "Xceed Software, Inc. Community License." (https://github.com/xceedsoftware/DocX/blob/master/license.md)
The license makes clear that it for non-commercial use only (and offers a commercial license can be purchased)
I think you should at least mention this. It might even be the case that you cannot include the mentioned library in your release without mentioning this, maybe it is even violating the license if you provide it unter the MIT license - I'm not sure.