1) Find the Addon_PC.pbo file in the mod files and un-pbo it with PBO program (e.g. PBOManager).
2) In the Addon_PC folder fing file named Stringtable.xml and open it in a code editor (e.g. Notepad++)
3) Translate each sentence enclosed in brackets with the name of the language into your own language. Use the information and examples at this link[community.bistudio.com].
4) Replace the translated file with a file in the Addon_PC.pbo folder and in-pbo it with the same program.
5) Start the game with the mod and run tests of your translation in-game. Check whether the translation is done correctly, whether all phrases, titles and expressions are translated correctly.
7) If everything is translated correctly, send me the translated version of your Stringtable.xml