Fix yamllint (emptylines)

roles/matrix-bot-maubot/defaults/main.yml

@@ -18,7 +18,6 @@ matrix_bot_maubot_container_config_dir: "/root/.config/"
 matrix_bot_maubot_bot_server: "https://{{ matrix_server_fqn_matrix }}"
 
 
-
 matrix_bot_maubot_logging_level: info
 matrix_bot_maubot_secret: ''
 matrix_bot_maubot_admin_user: ''