Fix some spacing.

templates/shinyproxy-2-conf.yml.j2

@@ -98,6 +98,7 @@ proxy:
     display-name: {{ app.display_name }}
     description: {{ app.description }}
     {% if app.cmd is defined %}container-cmd: ["R", "-e {{ app.cmd }}"]{% endif %}
+    
     container-image: {{ app.docker_image }}
     container-memory: {{ app.docker_memory | default('2g') }}
 {% if shinyproxy_version is version_compare('2.6.0', '>=') %}