Add mariadb example to DATABASE_URL

Author: alexander-schranz

doctrine/doctrine-bundle/2.8/manifest.json

@@ -11,7 +11,8 @@
         "#2": "IMPORTANT: You MUST configure your server version, either here or in config/packages/doctrine.yaml",
         "#3": "",
         "#4": "DATABASE_URL=\"sqlite:///%kernel.project_dir%/var/data.db\"",
-        "#5": "DATABASE_URL=\"mysql://app:[email protected]:3306/app?serverVersion=8&charset=utf8mb4\"",
+        "#5": "DATABASE_URL=\"mysql://app:[email protected]:3306/app?serverVersion=mariadb-10.11&charset=utf8mb4\"",
+        "#6": "DATABASE_URL=\"mysql://app:[email protected]:3306/app?serverVersion=8&charset=utf8mb4\"",
         "DATABASE_URL": "postgresql://app:[email protected]:5432/app?serverVersion=15&charset=utf8"
     },
     "dockerfile": [