### Describe the issue or suggestion - [x] Update ms.subservice values in docfx.json - Request new ms.subservice values: - [add microsoft.extensions](https://ceapex.visualstudio.com/Content%20Learning%20Content%20Architecture/_workitems/edit/1057840) - [add system.commandline](https://ceapex.visualstudio.com/Content%20Learning%20Content%20Architecture/_workitems/edit/1057843) - [add system.formats](https://ceapex.visualstudio.com/Content%20Learning%20Content%20Architecture/_workitems/edit/1057844) - [add windows.ui](https://ceapex.visualstudio.com/Content%20Learning%20Content%20Architecture/_workitems/edit/1057846) - [delete dblinq.util](https://ceapex.visualstudio.com/Content%20Learning%20Content%20Architecture/_workitems/edit/1057853) - [delete mono](https://ceapex.visualstudio.com/Content%20Learning%20Content%20Architecture/_workitems/edit/1057856) - [ ] Add new ms.subservice values to docfx.json once approved
