Adjusts light theme for better contrast on foreground, muted-foreground
and tertiary-foreground text
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## Summary by CodeRabbit
* **Style**
* Retuned the light theme’s surface chroma and updated light, muted, and
tertiary foreground levels for improved readability.
* Updated the brand link color saturation to better align with the
revised theme.
* Refreshed code block token colors for both light and dark themes.
* **Documentation**
* Updated the “Edit this page on GitHub” link styling to use updated
token-based text colors for default and hover states.
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* Add db wrappers open in dashboard cta
* Restore getLatestRelease return to null
* Add guide template components with flexible content positioning
* Add Guide components with composition pattern
* Remove default branch on tag value
* Add GuideTemplate component and do some clean up
* Restore original GuideTemplate
* Clean up code and unused props
* Remove displayName
* Remove unwanted export
* Refactor EditLink to its own helper file
* Apply several fixes
* Fix underline on cta button
* Remove default main tag
* More descriptive button cta label
* fix(docs): add iceberg_wrapper dashboard integration
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Co-authored-by: Charis Lam <26616127+charislam@users.noreply.github.com>
Saxon Fletcher