Marketplace for plugins on windows is broken #1844
Description
Describe the bug
On windows Powershell or CMDline (not WSL2) internal custom marketplace plugins are being looked for in the wrong place (root dir)
Affected version
0.421
Steps to reproduce the behavior
when adding an internal marketplace via /plugin marketplace add https://orgname.ghe.com/reponame.git
the cli subsequently fails when using /plugin install plgunname@internal-marketplace
with 'Not found'
Expected behavior
plugin is installed
Additional context
Issue appears to be that the CLI is looking in the root directory of the marketplace, not in the /plugins folder.
The same commands and config work on Mac.