mkdocs pages/flatly deprecation warning

[steveyen]

When running "mkdocs build --clean", I see...

WARNING - The pages config in the mkdocs.yml uses the deprecated structure. This will be removed in the next release of MkDocs. See for details on updating: http://www.mkdocs.org/about/release-notes/ WARNING - Config value: 'theme'. Warning: The theme 'flatly' will be removed in an upcoming MkDocs release. See http://www.mkdocs.org/about/release-notes/ for more details