Templates: update posthog (#93)

* Improves site configuration and styling

Updates the site configuration to enhance theming options, footer customization, and analytics.

Introduces theme support with light, dark, and system preference options.

Adds customization options for the footer, including navigation, contact information, credentials, and a disclaimer.

Refactors CSS styles to improve the appearance of the site, including a typewriter effect.

Adds 'Open Source' category and post.

* WIP skip actions

* Apply Auto-Translations

* WIP

no actions

* Apply Auto-Translations

* remove intermediate translations [skip actions]

* wip [skip actions]

* Adds a new post about docling UI

Adds a new blog post detailing the creation of a fresh UI for docling, including explanations, images, and related information.
The previous version of the file has been deleted.

* Apply Auto-Translations

* bumb go

* go version

* Improves site configuration and styling

Updates the site configuration to enhance theming options, footer customization, and analytics.

Introduces theme support with light, dark, and system preference options.

Adds customization options for the footer, including navigation, contact information, credentials, and a disclaimer.

Refactors CSS styles to improve the appearance of the site, including a typewriter effect.

Adds 'Open Source' category and post.

* WIP skip actions

* Apply Auto-Translations

* WIP

no actions

* Apply Auto-Translations

* remove intermediate translations [skip actions]

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Co-authored-by: David G. Simmons <davidgs@me.com>

Author: davidgs