docs: add update sitemap documentation for SSR

[DevWeb13]

What is it?

• [ ] Feature / enhancement
• [ ] Bug
• [x ] Docs / tests / types / typos
• [ ] Infra

Description

Checklist:

• [ x] My code follows the developer guidelines of this project
• [ x] I have performed a self-review of my own code
• [ x] I have ran pnpm change and documented my changes
• [x ] I have made corresponding changes to the Qwik docs
• [ ] Added new tests to cover the fix / functionality

[changeset-bot[bot]]

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Latest commit: a3543f8726ac91abd43e80fdb34af18145fad643

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[DevWeb13]

• Summary

This PR updates the Qwik documentation to include instructions for dynamically generating a sitemap using Server-Side Rendering (SSR). The changes are intended to help users set up a dynamically generated dynamic-sitemap.xml that reflects the latest routes and changes to their site, alongside the static sitemap generation for Static Site Generated (SSG) pages.

• Motivation

The addition of this documentation provides users with a comprehensive guide on how to generate sitemaps dynamically with SSR in Qwik. This is particularly useful for sites with content that is not known at build time or frequently updated content, ensuring search engines always have an up-to-date sitemap.

• Context

• Added instructions for creating a dynamic-sitemap.xml using SSR.

• Provided an example of the necessary code to set up the route for generating the sitemap dynamically.

• Updated the example robots.txt to reflect both dynamic and static sitemap usage. No specific issue is directly related to this PR, but it enhances the overall documentation by adding valuable information on dynamic sitemap generation. -->

[DevWeb13]

Thanks @DevWeb13 it looks great 👍

You're welcome