commonlib: Remove markdown formatting from solution elements

[Arunodoy18]

Relates to zaproxy/zaproxy#8056

Summary

Remove markdown formatting artifacts from <solution> elements in vulnerabilities.xml.

Changes

Three entries contained markdown syntax (**bold** markers and 1. numbered lists) in their <solution> elements. Solutions are rendered as plain text and should not contain markdown.

Affected entries:

• wasc_21 (Insufficient Anti automation)
• wasc_45 (Fingerprinting)
• wasc_48 (Insecure Indexing)

What was changed

• Removed **bold** markers (e.g., **CAPTCHA:** → CAPTCHA:)
• Converted numbered lists (1., 2., etc.) to dash-prefixed lines (-)
• No wording changes — all text preserved exactly

Validation

• No markdown remains in any <solution> element
• XML is well-formed
• No changes to <desc>, <alert>, or <reference> elements
• No structural or ordering changes

[github-actions]

All contributors have signed the CLA ✍️ ✅
_{Posted by the CLA Assistant Lite bot.}

[psiinon]

Checkmarx One – Scan Summary & Details – 6e462449-a201-47bf-92ed-94fe72ec6ddc

Great job! No new security vulnerabilities introduced in this pull request

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[Arunodoy18]

I have read the CLA Document and I hereby sign the CLA

CHANGELOG should be updated.

[Arunodoy18]

CHANGELOG updated 👍
— added CHANGELOG entry under ## Unreleased > ### Changed.

[kingthorin]

Thanks

[thc202]

Thank you!