fix(docs): align security contact email with Security Policy

[Hritwik001]

Summary

Fixes an inconsistency in the security contact email across documentation.

• Contributing docs: previously listed [email protected]
• Security Policy: lists [email protected]

This PR updates the Contributing docs to use [email protected] for consistency and clarity.

Rationale

• Keeps a single, canonical security contact across all public references
• Reduces confusion for security reporters
• Aligns with GitHub’s Security Policy page

Scope

• Documentation only (no runtime or code changes)
• File updated: docs/contributing/getting-started/overview.mdx

References

• Contributing Docs
• Security Policy

Checklist

• [x] Updated to [email protected]
• [x] Verified no other mismatched instances remain

Issue: #4704

Closes https://github.com/Infisical/infisical/issues/4704

[maidul98]

:white_check_mark: Snyk checks have passed. No issues have been found so far.

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[Hritwik001]

Hi @x032205 , this is a tiny docs consistency fix (one line, email alignment). When you have a moment, could you take a look and merge it?