rename readthedocs url to documentation in pyproject.toml

Author: sjvrijn

template/pyproject.toml.jinja

@@ -80,7 +80,7 @@ Issues = "{{ repository_url }}/issues"
 Changelog = "{{ repository_url }}/CHANGELOG.md"
 {% endif -%}
 {% if AddOnlineDocumentation -%}
-ReadTheDocs = "https://{{ package_name }}.readthedocs.io"
+Documentation = "https://{{ package_name }}.readthedocs.io"
 {% endif %}
 {% if AddLocalTests -%}
 [tool.pytest.ini_options]