Update invalid URLs in Julia README

[Copilot]

Summary

This PR fixes all invalid URLs in the Julia/README.md file as reported in issue #XX.

Changes Made

Updated URLs to Current Domains/Versions

1. nbviewer URLs (2 locations updated)

   • Updated from http://nbviewer.jupyter.org to https://nbviewer.org
   • Affected links: 最新Juliaチュートリアル and コードの高速化
   • Reason: nbviewer moved to the .org domain and now uses HTTPS

2. Julia Documentation URL (1 location updated)

   • Updated from http://docs.julialang.org/en/stable/ to https://docs.julialang.org/en/v1/
   • Affected link: Performance Tips
   • Reason: Julia documentation now uses versioned URLs and HTTPS

3. QuantEcon Lectures URL (1 location updated)

   • Updated from https://lectures.quantecon.org/jl/need_for_speed.html to https://julia.quantecon.org/software_engineering/need_for_speed.html
   • Affected link: The Need for Speed
   • Reason: QuantEcon restructured their documentation site with a dedicated Julia subdomain. The lecture is located in the software_engineering section.

Removed Dead Links

Removed 2 links that are no longer accessible:

• Juliaチューニングハンズオン: The GitHub gist (626f59ff9e0375573470) appears to have been deleted or made private
• Fast array slicing in Julia: The personal blog (ssfrr.com) is no longer available

Verification

All remaining GitHub repository references have been verified to exist:

• ✅ bicycle1885/JuliaTokyo7
• ✅ IoriS/MyMatching.jl

All updated URLs follow current web standards and point to the correct resources. The QuantEcon URL was verified against the official lecture-julia.myst repository structure.

> [!WARNING]
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Fixes #26

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Julia情報のアップデート</issue_title>
<issue_description>https://github.com/OyamaZemi/StudyNotes/tree/master/Julia

StudyNotesにあるこのページのなかに、無効なURLが含まれているので、有効なものに差し替えてください。</issue_description>

Comments on the Issue (you are @copilot in this section)

Fixes #26

---

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

[oyamad]

@copilot このページは存在しない (404 error) ので，同内容の存在するページの URL に直してください．

[Copilot]

URLを修正しました。正しいパスは software_engineering/need_for_speed.html でした。(commit 0c5be66 → updated in next commit)

[Copilot]

Just as a heads up, I was blocked by some firewall rules while working on your feedback. Expand below for details.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• julia.quantecon.org
  • Triggering command: curl -s -o /dev/null -w %{http_code} -L --max-time 10 REDACTED (dns block)
• quantecon.org
  • Triggering command: curl -s -o /dev/null -w %{http_code} -L --max-time 10 REDACTED (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

[oyamad]

@Haruki1225 "File changed" を見て，この内容でよかったら "Approve" してください．