bug in documentation: http://reactcommunity.org/react-modal/styles/classes/ has a link to a '404' page

[hamirmahal]

Summary:

There's a link to default content styles in the Classes page of the documentation, but it appears to be invalid. For faster reference, here's what clicking on the link in the documentation looks like for me.

Steps to reproduce:

1. Visit http://reactcommunity.org/react-modal/styles/classes/.
2. Scroll down until you reach the default content styles link. There is a screenshot below for quick reference.
3. Click on it.

Expected behavior:

I expected to see a page showing me the default content styles. Maybe this link should go to index.md instead?

Link to example of issue:

Link to nonexistent page linked from Classes page of documentation

Additional notes:

I looked at the history of the styles folder, and it looks like README.md existed on Dec 10, 2018 with commit 2ae092a, but not on Dec 9, 2019 with commit e5fe406.

So, my guess is that this is something that went amiss with the migration to mkdocs.