Incomplete documentation

[bibhas2]

Page: https://docs.asciidoctor.org/diagram-extension/latest/diagram_types/mermaid/

It will be helpful if this page mentioned what dependencies need to be installed before mermaid could be used in a document. For example, it appears that mermaid-cli needs to be installed.

Also, I don't see any document that says [mermaid] is the diagram type. I figured this out from other websites. But this crucial information is strangely lacking in documentation.