I would suggest adding your own column to the dataset through a report extension, and replacing the Document Terms on the report layout (RDL file in Report Builder).

https://learn.microsoft.com/en-us/dynamics365/business-central/dev-itpro/developer/devenv-report-ext-object?wt.mc_id=MVP_383480

Yun Zhu has a blog that might be a good starting place for you as well. https://yzhums.com/1958/