Update Markdown configuration to a more secure practice

[ildyria]

Summary by CodeRabbit

• Chores
  • Enhanced security by disabling unsafe links in markdown processing.
  • Improved stability and performance by implementing maximum nesting depth limits in markdown rendering.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 8ddb5414-b46c-43b1-86f2-f80076188542

📥 Commits

Reviewing files that changed from the base of the PR and between 7d79492 and 843c1a5.

📒 Files selected for processing (1)

• config/markdown.php

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📝 Walkthrough

Walkthrough

CommonMark parser safety is hardened by disabling unsafe HTML links and capping maximum block nesting to 10 levels, preventing potential security issues and denial-of-service attacks from deeply nested markdown structures.

Changes

CommonMark Configuration Hardening

Layer / File(s)	Summary
Safety constraints on markdown parsing config/markdown.php	The CommonMark configuration disables allow_unsafe_links and caps max_nesting_level at 10, preventing malicious or deeply nested markdown content from exploiting parser vulnerabilities.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 A rabbit hops through code so neat,
Where markdown rules must stay discreet,
No unsafe links shall creep inside,
And nesting depths are sanctified,
Safe config hops, we're all more sweet! 🔒

🚥 Pre-merge checks | ✅ 1

✅ Passed checks (1 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.23%. Comparing base (7d79492) to head (843c1a5).

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