Allow attributes and html in markdown

cmd/backend/markdown.go

@@ -7,6 +7,8 @@ import (
 	"github.com/microcosm-cc/bluemonday"
 	"github.com/yuin/goldmark"
 	"github.com/yuin/goldmark/extension"
+	"github.com/yuin/goldmark/parser"
+	"github.com/yuin/goldmark/renderer/html"
 )
 
 func ConvertToHTML(md string) (string, error) {
@@ -16,6 +18,12 @@ func ConvertToHTML(md string) (string, error) {
 		goldmark.WithExtensions(
 			extension.GFM,
 		),
+		goldmark.WithParserOptions(
+			parser.WithAttribute(),
+		),
+		goldmark.WithRendererOptions(
+			html.WithUnsafe(), // HTML-Inhalte erlauben
+		),
 	)
 
 	if err := gm.Convert([]byte(md), &buf); err != nil {