It is commom to use many README's distributed in the repository, like this:

• root README.md is a relevant content and can't duplicate in a /docs

• the sub-project's README's as in these folders

• other *.md that are not README, but are content, as this other report-*.md.

So, we need a simple non-/docs paths at mkdocs.yml... Will be a good issue for mkdocs.