Add typst among format that support callouts

Author: cderv

docs/authoring/callouts.qmd

@@ -148,13 +148,14 @@ Using callouts is an effective way to highlight content that your reader give sp
 
 The following formats render callouts as illustrated above:
 
--   HTML
--   PDF
--   MS Word
--   EPUB
--   Revealjs (without collapse option)
-
-Note that callout rendering for HTML is not available when you disable the standard HTML theme (e.g. if you specify the `theme: none` option). Also, some features are specific to document using Bootstrap, like collapsible callouts, and won't work in other documents.
+-   `format: html`
+-   `format: pdf`
+-   `format: typst`
+-   `format: docx`
+-   `format: epub`
+-   `format: revealjs` (without collapse option)
+
+Note that callout rendering for `format: html` is not available when you disable the standard HTML theme (e.g. if you specify the `theme: none` option). Also, some features are specific to document using Bootstrap, like collapsible callouts, and won't work in other documents.
 
 When the target format doesn't support callouts, they are rendered as a simple blockquote with the title in bold.