[TASK] Correting composer json

composer.json

@@ -3,11 +3,18 @@
 	"type": "typo3-cms-extension",
 	"description": "Mail Templating Service",
 	"homepage": "https://www.sgalinski.de",
-	"license": ["GPL-2.0+"],
+	"license": [
+		"GPL-2.0+"
+	],
 	"version": "1.0.0",
+	"repositories": [
+		{
+			"type": "composer",
+			"url": "https://packages.sgalinski.de/"
+		}
+	],
 	"require": {
-		"typo3/cms-core": "^7.6",
-		"cebe/markdown": "~1.0.1"
+		"typo3/cms-core": "^7.6"
 	},
 	"replace": {
 		"sg_mail": "self.version"