Incorrect "edit" links in documentation

[eliemichel]

Describe the bug
Links to quickly edit and suggest pull requests in the documentation point to the generated md files rather than the actual source of truth.

To Reproduce
Steps to reproduce the behavior:

1. Go to any doc page, e.g. https://rerun.io/docs/reference/types/archetypes
2. Click on "Edit page" in the right-hand sidebar
3. You'll end up on the wrong page in github

Expected behavior
It should point to crates/build/re_types_builder/src/codegen/docs/mod.rs instead of the md file.

Screenshots