Update image paths in architecture diagrams

[kahirokunn]

What

This PR fixes broken image paths in two documentation pages:

• website/docs/cloud-docs/agents/request-forwarding.mdx
• website/docs/cloud-docs/agents/telemetry.mdx

The image references have been updated from /public/img/... to /website/public/img/... to ensure the architecture diagrams display correctly.

Why

The previous image paths were incorrect, which prevented the diagrams from rendering on the site. By correcting these paths, users will now be able to see the proper diagrams, improving the clarity and usability of the documentation.

Screenshots

N/A

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Merge Checklist

If items do not apply to your changes, add (N/A) and mark them as complete.

Pull Request

• One or more labels describe the type of change (e.g. clarification) and associated product (e.g. HCP Terraform).
• Description links to related pull requests or issues, if any.

Content

• Redirects have been added for moved, renamed, or deleted pages. (N/A)
• API documentation and the API Changelog have been updated. (N/A)
• Links to related content where appropriate (e.g., API endpoints, permissions, etc.). (N/A)
• Pages with related content are updated and link to this content when appropriate.
• Sidebar navigation files have been updated for added, deleted, reordered, or renamed pages. (N/A)
• New pages have metadata (page name and description) at the top. (N/A)
• New images are 2048 px wide. (N/A)
• New code blocks have the correct syntax and line breaks to eliminate horizontal scroll bars. (N/A)
• UI elements (button names, page names, etc.) are bolded. (N/A)
• The Vercel website preview successfully deployed.

Reviews

• I or someone else reviewed the content for technical accuracy.
• I or someone else reviewed the content for typos, punctuation, spelling, and grammar.

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