Update content on responsible quantum pg

[abbycross]

Closes #5145

[qiskit-bot]

One or more of the following people are relevant to this code:

• @abbycross

[abbycross]

@abdonrd I tried making an edit (I removed standalone ) characters that were being used to enumerate a list) in case that is what is breaking it - but the PR preview build is still failing :(

[abdonrd]

The PR preview build was failing because scripts/pr-previews/builder.py drops _toc.json and index.* files from any section that has no changed files in this PR.

The copytree ignore filter adds the entire subdirectory (e.g. docs/guides, learning/courses/*) to the ignore list when nothing inside it changed, so copytree never descends into it, and the rules meant to always preserve _toc.json and index.* never get a chance to run. With no _toc.json files copied, the Next.js app's /api/toc/[[...tocPath]] route can't generate static params during output: export, producing the misleading error:

Page "/api/toc/[[...tocPath]]" is missing "generateStaticParams()"

This only surfaces when a PR's only changes are in files at the root of docs/ (like responsible-quantum-computing.mdx), which is why other PRs build fine.

Fix: copy all _toc.json and index.* files explicitly after the copytree pass, alongside the existing hardcoded list. The ignore filter is simplified since those special cases are no longer needed there.