fix(docs): repoint references to the relocated contributing guide

[hyperpolymath]

fix(docs): repoint references to the relocated contributing guide

The guide moved to .github/CONTRIBUTING.md; these references still resolved
against the old root location and 404 from where they are written. Rewritten
using the correct relative depth.

• ROADMAP.adoc: CONTRIBUTING.md -> .github/CONTRIBUTING.md
• SECURITY.adoc: CONTRIBUTING.md -> .github/CONTRIBUTING.md

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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Configuration used: Organization UI

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Plan: Advanced

Run ID: 45d9947b-4873-4a23-a3db-0febbe00404f

📥 Commits

Reviewing files that changed from the base of the PR and between f265f72 and bd5a519.

📒 Files selected for processing (2)

• ROADMAP.adoc
• SECURITY.adoc

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🔇 Additional comments (2)

ROADMAP.adoc (1)

172-172: LGTM!

SECURITY.adoc (1)

413-413: LGTM!

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📝 Summary

Summary by CodeRabbit

• Documentation
  • Updated contribution-guideline links in the roadmap and security documentation to point to their current location.

Walkthrough

Two documentation links now point to .github/CONTRIBUTING.md instead of the repository-root path. No functional or logic changes were introduced.

Changes

Contributing links

Layer / File(s)	Summary
Update documentation links ROADMAP.adoc, SECURITY.adoc	Both contributing-guidelines links now target .github/CONTRIBUTING.md.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~5 minutes

Change: Other

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly describes the documentation change: it updates references to the relocated contributing guide.
Description check	✅ Passed	The description accurately explains the link updates in ROADMAP.adoc and SECURITY.adoc and matches the stated objective.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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_{A rabbit checks the links with care
Each path now leads to guidelines there
The roadmap points the proper way
Security follows without delay
No code changed beneath the hay}

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