Publishing html pages within docs folder

[nishad]

@seanpetiya @kcoyle, if you want to publish a complete HTML page as it is, use .html extension for the files instead of .md. For example, docs/ns/index.md should be docs/ns/index.html to prevent it from being further processed by GitHub pages; this page will be rendered differently if you use .md extensions as in the screenshot.

I have fixed this with c9f5d41