Fix edit links in docs/

[kennedybaird]

These links haven't been working, I think I simplified a little by making sure we only set isIndexPage on the section homepages.

[kennedybaird]

Realised this doesn't solve for updates / blog routes.

Thinking about this more, I would suggest removing the edit button from updates/roadmap/blog posts.

Happy to go either direction however.

[simonswiss]

Nice one — thanks for picking that up!

I think we can fix the remaining ones fairly easily:

1. For the Blog, you could change the editPath in the <BlogPage> component in app/(site)/blog/[post]/page-client.tsx (line 24) from docs/${params?.post}.md to blog/${params?.post}.md.

2. updates/roadmap/page.tsx can take an isIndexFile to resolve to the correct edit path.

3. In the same vein of the changes you made in the PR, the docs/guides/document-field-demo/page.tsx needs to be updated with isIndexPage as well.

Would you like to do these changes well to get this PR merged?

If you don't have time, I can make those changes!

[simonswiss]

I've made the 3 changes to your branch — let me know what you think!

[kennedybaird]

Great, LGTM @simonswiss 👍