License detection issues in python library METADATA

[tdruez]

See METADATA file in METADATA.zip
The file is extracted from django_altcha-0.2.0-py3-none-any.whl

1. The License-Expression: MIT line is ignored. It should return mit
2. The License-File: LICENSE line is detected as unknown-license-reference. Instead it should be ignored as it's a reference to the LICENSE file.
3. The following is detected as apache-2.0, it should be mit:

This project is licensed under the **MIT License**.
See the [LICENSE](./LICENSE) file for details.