Update formats.md doc for new allowed extensions. - hugo - [fork] hugo port for 9front
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 (DIR) commit e9f87c4e3feee937d05504763935805fec26213c
 (DIR) parent defd7106bf79a502418ec373bdb82742b16f777f
 (HTM) Author: Bryan Klein <klein@thunderheadeng.com>
       Date:   Thu,  2 Jul 2020 15:16:33 -0700
       
       Update formats.md doc for new allowed extensions.
       
       This PR documents the changes made in https://github.com/gohugoio/hugo/pull/7447/files adding two other extensions to the Allowed list.
       Diffstat:
         M docs/content/en/content-management… |       2 +-
       
       1 file changed, 1 insertion(+), 1 deletion(-)
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 (DIR) diff --git a/docs/content/en/content-management/formats.md b/docs/content/en/content-management/formats.md
       @@ -75,7 +75,7 @@ Parameter | Default | Comment
        --- | --- | --- 
        backend | `html5` | Don't change this unless you know what you are doing.
        doctype | `article` | Document type (article, book or manpage).
       -extensions | | Possible extensions are `asciidoctor-html5s`, `asciidoctor-diagram`,        `asciidoctor-interdoc-reftext`, `asciidoctor-katex`, `asciidoctor-latex`, `asciidoctor-question`, `asciidoctor-rouge`.
       +extensions | | Possible extensions are `asciidoctor-html5s`, `asciidoctor-bibtex`, `asciidoctor-diagram`,        `asciidoctor-interdoc-reftext`, `asciidoctor-katex`, `asciidoctor-latex`, `asciidoctor-mathematical`, `asciidoctor-question`, `asciidoctor-rouge`.
        attributes | | Variables to be referenced in your `adoc` file. This is a list of variable name/value maps. See [Asciidoctor#attributes](https://asciidoctor.org/docs/asciidoc-syntax-quick-reference/#attributes-and-substitutions).
        noheaderorfooter | true | Output an embeddable document, which excludes the header, the footer, and everything outside the body of the document. Don't change this unless you know what you are doing. 
        safemode | `unsafe` | Safe mode level `unsafe`, `safe`, `server` or `secure`. Don't change this unless you know what you are doing.