Don't convert ellipsis in markdown (#9905) (#9937)

* Don't convert ellipsis

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Formatting

Co-Authored-By: zeripath <art27@cantab.net>

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: Antoine GIRARD <sapk@users.noreply.github.com>
Co-authored-by: zeripath <art27@cantab.net>

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: Antoine GIRARD <sapk@users.noreply.github.com>
Co-authored-by: zeripath <art27@cantab.net>

modules/markup/markdown/markdown.go

 				common.FootnoteExtension,
 				extension.NewTypographer(
 					extension.WithTypographicSubstitutions(extension.TypographicSubstitutions{
-						extension.EnDash: nil,
-						extension.EmDash: nil,
+						extension.EnDash:   nil,
+						extension.EmDash:   nil,
+						extension.Ellipsis: nil,
 					}),
 				),
 			),