bug: uninstall failed when pwsh.exe installed by scoop #147

Details:
#143
The root cause is:

• The shim executable generated by Scoop is not the actual pwsh.
• It must first parse the target program, determine whether it's GUI or console, and then forward the arguments.
• In certain environments, the parsing fails and outputs:
  Shim: Could not determine if target is a GUI app. Assuming console.
• It returns a non-zero exit code, which the Coreutils uninstaller treats as a fatal error.

Simplest fix it is add a tip in README.md ,let users use microsoft's pwsh.exe rather than other pwsh.exe(e.g. scoop)

To fix this fundamentally, you might want to consider my PR #74.