Add note to custom containers

[o-l-a-v]

Is your feature request related to a problem? Please describe.

Other markdown SSG products has a note infobox.

GitHub flavored alerts has it with > [!NOTE]:

• https://vitepress.dev/guide/markdown#github-flavored-alerts

Docusaurus has it with :::note:

• https://docusaurus.io/docs/markdown-features/admonitions

Describe the solution you'd like

Add note to custom containers so this works:

::: note
Some note
:::

Describe alternatives you've considered

Using GitHub flavored alerts.

Additional context

No response

Validations

• Follow our Code of Conduct
• Read the docs.
• Read the Contributing Guidelines.
• Check that there isn't already an issue that asks for the same feature to avoid creating a duplicate.

[brc-dd]

Sorry, how is that example related?

[o-l-a-v]

@brc-dd: Sorry, that comment was ment for my other open issue. 🤦‍♂️