Infinite reload loop on a 404 page

**Your Godot version:**
N/A

**Issue description:**
I followed a link from https://caseyyano.com/on-evaluating-godot-b35ea86e8cf4 to https://docs.godotengine.org/en/stable/engine_details/development/file_formats/tscn.html and my browser got stuck in an infinite reload loop.

Tested in Firefox on Windows and Android, and in a completely clean install of Chromium Portable, all with the same behavior.

**URL to the documentation page:**
https://docs.godotengine.org/en/stable/engine_details/development/file_formats/tscn.html

Start by opening the reported tscn.html URL and tracing the documentation entry or routing that serves it. Confirm the cause in the tested browsers, then verify that the page returns normally without an infinite reload loop.

Written by the indexing model from the issue text.