Have you read the Contributing Guidelines on issues?

• I have read the Contributing Guidelines on issues.

Prerequisites

• I'm using the latest version of Docusaurus.
• I have tried the npm run clear or yarn clear command.
• I have tried rm -rf node_modules yarn.lock package-lock.json and re-installing packages.
• I have tried creating a repro with https://new.docusaurus.io.
• I have read the console error message carefully (if applicable).

Description

The "file path" type of link does not seem to function for Pages.

Reproducible demo

https://github.com/ISSOtm/rgbds-www/blob/bf8d9167382a92f3e3db9a9c770f4ea8c78429d4/src/pages/install/linux.md?plain=1#L4

Steps to reproduce

1. Edit the "demo" link from /install to index.md or ./index.md.

Expected behavior

The documentation only mentions that inter-plugin links don't work, but both of those pages are processed by the "pages" plugin; so I'd expect "file path" links to be converted appropriately.

I want to use "file path" links instead of relative URLs, so that I can benefit from all of the upsides listed at the bottom of the page ;P

Actual behavior

The generated link is localhost:3000/install/index.md, not localhost:3000/install (or equivalent).

Your environment

• Public source code: https://github.com/gbdev/rgbds
• Public site URL: https://rgbds.gbdev.io
• Docusaurus version used: 3.1.1
• Environment name and version (e.g. Chrome 89, Node.js 16.4): Node v21.6.2
• Operating system and version (e.g. Ubuntu 20.04.2 LTS): Arch Linux

Self-service

• I'd be willing to fix this bug myself.