Wrong default debug configuration in launch.json

[hermanwenhe]

Expected behavior

launch Word Desktop (Edge Chromium) as default

Current behavior

Please provide information about the failure. What is the current behavior? If it is not a bug, please submit your idea to the Microsoft Tech Community Ideas forum, so that it gets added to our feature roadmap.

Steps to Reproduce

Please provide detailed steps for reproducing the issue.

1. Create a word add-in project through yeoman
2. Press F5

Failure Logs

The default launch configuration is Excel Desktop, which will fail when we press F5.

I think we should delete those useless configs like Excel/PPT/Outlook configuration for Word Add-in. Maybe this should be done in convertToSingleHost.js.