Fix broken documentation URLs

[jackgdsf]

Summary

Closes #740

• Fix meep readthedocs URL: GDSII_Import → GDS_Import (page renamed upstream)
• Fix Palace docs URLs: config/solver/ → config/reference/ (docs restructured)
• Fix Jupyter Book URLs: add /en/stable/ prefix (docs moved)
• Update gdsfactory docs comment URLs to current paths

Test plan

• Pre-commit lychee link check passes
• No functional code changes — only URLs in comments and docstrings

Reminder: AI-created PRs still require human review of the actual code changes before merge. I'll open the PR, but a human must review and approve it.

🤖 Generated with Claude Code

Summary by Sourcery

Update documentation references to point to current external URLs without changing runtime behavior.

Documentation:

• Refresh Jupyter Book configuration and TOC comments to use the stable jupyterbook.org URLs.
• Correct Meep manual links in simulation utilities and example notebook to the renamed GDS import page.
• Update Palace documentation links in Palace-related plugins to the restructured config reference section.
• Adjust gdsfactory documentation comment URLs to match current notebook and API paths.

[gemini-code-assist]

Caution

The consumer version of Gemini Code Assist on GitHub has been sunset. All code review activity has officially ceased.

[sourcery-ai]

🧙 Sourcery has finished reviewing your pull request!

---

Tips and commands

Interacting with Sourcery

• Trigger a new review: Comment @sourcery-ai review on the pull request.
• Continue discussions: Reply directly to Sourcery's review comments.
• Generate a GitHub issue from a review comment: Ask Sourcery to create an
  issue from a review comment by replying to it. You can also reply to a
  review comment with @sourcery-ai issue to create an issue from it.
• Generate a pull request title: Write @sourcery-ai anywhere in the pull
  request title to generate a title at any time. You can also comment
  @sourcery-ai title on the pull request to (re-)generate the title at any time.
• Generate a pull request summary: Write @sourcery-ai summary anywhere in
  the pull request body to generate a PR summary at any time exactly where you
  want it. You can also comment @sourcery-ai summary on the pull request to
  (re-)generate the summary at any time.
• Generate reviewer's guide: Comment @sourcery-ai guide on the pull
  request to (re-)generate the reviewer's guide at any time.
• Resolve all Sourcery comments: Comment @sourcery-ai resolve on the
  pull request to resolve all Sourcery comments. Useful if you've already
  addressed all the comments and don't want to see them anymore.
• Dismiss all Sourcery reviews: Comment @sourcery-ai dismiss on the pull
  request to dismiss all existing Sourcery reviews. Especially useful if you
  want to start fresh with a new review - don't forget to comment
  @sourcery-ai review to trigger a new review!

Customizing Your Experience

Access your dashboard to:

• Enable or disable review features such as the Sourcery-generated pull request
  summary, the reviewer's guide, and others.
• Change the review language.
• Add, remove or edit custom review instructions.
• Adjust other review settings.

Getting Help

• Contact our support team for questions or feedback.
• Visit our documentation for detailed guides and information.
• Keep in touch with the Sourcery team by following us on X/Twitter, LinkedIn or GitHub.

[sourcery-ai]

Hey - I've left some high level feedback:

• For the Palace documentation links, consider updating to more specific anchors within config/reference (e.g., pointing directly to the Solver/Linear/Driven sections) to preserve the original level of guidance for users.
• Double-check whether using the /en/stable/ prefix for all Jupyter Book references is desired long-term, as hardcoding the versioned path may require future updates when the default stable version changes.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- For the Palace documentation links, consider updating to more specific anchors within `config/reference` (e.g., pointing directly to the `Solver`/`Linear`/`Driven` sections) to preserve the original level of guidance for users.
- Double-check whether using the `/en/stable/` prefix for all Jupyter Book references is desired long-term, as hardcoding the versioned path may require future updates when the default stable version changes.

---

Sourcery is free for open source - if you like our reviews please consider sharing them ✨

• X
• Mastodon
• LinkedIn
• Facebook

_{Help me be more useful! Please click 👍 or 👎 on each comment and I'll use the feedback to improve your reviews.}