Issue Description

There are some broken links on the "File structure of a block" page.
https://developer.wordpress.org/block-editor/getting-started/fundamentals/file-structure-of-a-block/

It looks like only this sentence has the bad links

This file includes the block name, description, attributes, supports, and more, as well as the locations of essential files responsible for the block’s functionality, appearance, and styling.

Suggested Fix

It looks like they're referencing markdown files whereas the rest of the docs is not.

Bad link:
https://developer.wordpress.org/block-editor/getting-started/fundamentals/file-structure-of-a-block/docs/block-editor/reference-guides/block-api/block-attributes.md

Good link:
https://developer.wordpress.org/block-editor/reference-guides/block-api/block-attributes/