Fix typo

templates/docker-compose.yml.twig

@@ -2,7 +2,7 @@ version: '3'
 
 services:
   mariadb:
-{% if dbserver.type == 'mariab' %}
+{% if dbserver.type == 'mariadb' %}
     image: 'wodby/mariadb:{{ dbserver.version }}'
 {% elseif dbserver.type == 'mysql' %}
     image: 'mysql/mysql-server:{{ dbserver.version }}'