enable markdown syntax in custom_notes field

Signed-off-by: Michael Kaufmann <d00p@froxlor.org>

composer.json

@@ -53,10 +53,10 @@
 		"froxlor/idna-convert-legacy": "^2.1",
 		"voku/anti-xss": "^4.1",
 		"twig/twig": "^3.3",
-		"erusev/parsedown": "^1.7",
 		"symfony/console": "^5.4",
 		"pear/net_dns2": "^1.5",
-		"amnuts/opcache-gui": "^3.4"
+		"amnuts/opcache-gui": "^3.4",
+		"league/commonmark": "^2.4"
     },
 	"require-dev": {
 		"phpunit/phpunit": "^9",