[docs] Local host server bug

[Bach]

I started a local host server using python3 -m http.server

Wanted to view the listing of the directory "Web" in my browser (Firefox 
and Edge tested).

Instead of the directory, it opens "index.html" all the time.

The problem persists until I change the name of this file to others.

Took me 2 days to diagnose the problem (even took the time to install 
Ubuntu and tested it). Sorry if this is a known bug.


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