Fix reference docs link in readme, so that it shows correctly on PyPI.
Since readme content is copied, PyPI doesn't know the base URL for the links in the readme file, and today pypi's link for "the reference docs" points to https://pypi.org/project/pytest-operator/docs/reference.md which doesn't exit.
Fix reference docs link in readme, so that it shows correctly on PyPI.
Since readme content is copied, PyPI doesn't know the base URL for the links in the readme file, and today pypi's link for "the reference docs" points to
https://pypi.org/project/pytest-operator/docs/reference.mdwhich doesn't exit.