build(api-markdown-documenter): Simplify API-Extractor setup

[Josmithr]

This package is versioned and published independently from the rest of the repo. It was previously set up to use our shared base API-Extractor configs, which are configured for packages in release groups that version/publish many packages together.

Specific changes:

• Don't extend shared config
• Remove "lint" config (unused and unneeded)
• Restore rollup generation
• Fix /beta export path
• Remove alpha report (this package has no alpha APIs nor export)

[Copilot]

Pull Request Overview

This PR simplifies the API-Extractor setup for the api-markdown-documenter package so that it can be versioned and published independently.

• Removed shared configuration extend and inlined API-Extractor configuration
• Updated export type paths in package.json to better reflect the package name and fixed the /beta path
• Removed the obsolete api-extractor-lint.json file

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
tools/api-markdown-documenter/package.json	Updated exports to use more descriptive type paths
tools/api-markdown-documenter/api-extractor.json	Removed shared config extend and added inline API-Extractor settings
tools/api-markdown-documenter/api-extractor-lint.json	Removed obsolete lint configuration file

[WayneFerrao]

Left a couple comments but looks good! :)

[chentong7]

Where's @Alpha API document covering?

[Josmithr]

This package doesn't have any alpha APIs, so I removed the alpha report. It can be re-added as needed later.

[chentong7]

gogogo

[github-actions]

🔗 No broken links found! ✅

Your attention to detail is admirable.

linkcheck output

> fluid-framework-docs-site@0.0.0 ci:check-links /home/runner/work/FluidFramework/FluidFramework/docs
> start-server-and-test "npm run serve -- --no-open" 3000 check-links

1: starting server using command "npm run serve -- --no-open"
and when url "[ 'http://127.0.0.1:3000' ]" is responding with HTTP status code 200
running tests using command "npm run check-links"


> fluid-framework-docs-site@0.0.0 serve
> docusaurus serve --no-open

[SUCCESS] Serving "build" directory at: http://localhost:3000/

> fluid-framework-docs-site@0.0.0 check-links
> linkcheck http://localhost:3000 --skip-file skipped-urls.txt

Crawling...

Stats:
  222981 links
    1707 destination URLs
    1939 URLs ignored
       0 warnings
       0 errors