Remove double quotes from paths

Description

Hopefully allows things to clone on windows

Checklist

Please confirm that this pull request has done the following:

• Tests added (if I make this mistake again, CI will fail, see e.g. https://gitlab.com/openscm/copier-core-python-repository/-/jobs/9297663337)
• Documentation added (where applicable) (but I should have read https://copier.readthedocs.io/en/stable/configuring/#conditional-files-and-directories more carefully)
• Changelog item added to changelog/