Does the page has support to mermaid diagram?

At [Jakarta Query](https://github.com/jakartaee/query), we explain various topics using diagrams created with Mermaid.

That is super useful, mainly given that it is a new specification.

Question: Do we have support for this kind of diagram on our webpage as well?

On GitHub, it has support and rendering based on the code.

If there is no support yet, could we include it?

Start by examining how the specifications repository publishes its Hugo-based pages and how diagrams or embedded content are currently rendered. Confirm whether Mermaid content can be supported in the published Jakarta EE pages, and consider the work done when Mermaid diagrams render reliably on those pages.

Written by the indexing model from the issue text.