Summary:
By default docusaurus generates pages and routes for every mdx file it finds under the root dir. So even for the mdx files which are only used as includes and don't even have headers, page is still created, then index and often looks very weird, e.g. title is the same as file name etc. See e.g. this one: https://www.internalfb.com/intern/staticdocs/flipper/docs/fb/portal-troubleshooting/
I went through Flipper docs and renamed all mdx files which are only used as includes to prepend them with underscore. Everything which name is starting with underscore, or which is inside a folder which name is starting with underscore is considered private by docusaurus and skipped.
Reviewed By: passy
Differential Revision: D32722547
fbshipit-source-id: 0524d4dd56960714fbdd2b01ad8383cd16de4948
