Convert routers page to HTML admonitions

[rollsicecream]

Changes proposed in this PR:

• Convert routers page to HTML admonitions

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Lighthouse	4 paths audited Performance: 78 (🟢 up 3 from production) Accessibility: 91 (🔴 down 1 from production) Best Practices: 98 (no change from production) SEO: 88 (no change from production) PWA: - View the detailed breakdown and full score reports

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[privacyguides-bot]

This pull request has been mentioned on Privacy Guides. There might be relevant details there:

https://discuss.privacyguides.net/t/v3-20-1/16742/1