How to access web server hosted on NAS while using KOreader?

[BMANN2]

I recently started using KOreader and Calibre running on my PC, then accessing it through the OPDS Catalog. But this is very annoying as to easily find mangas I have to manually edit the metadata every time I add more to Calibre. What I do is set the author to the manga title. So I just click sort by Authors on my Kobo when connecting to the Calibre server and easily find volumes/chapters.

The annoying thing is I don't always keep my computer on, and don't like having the edit the metadata for every single file I add. So I setup a web server on my TrueNAS (I am not knowledgeable in this stuff I simply watched a guide) using nginx. Now when I access 192.168.2.89 on my PC browser I see a folder directory structure, as seen in the attached image "Web Server Index".

Now I should have asked this before I did all that work... How can I now access this from my Kobo Forma running KOreader?