Small typo

Hi,
When catching up on the translations, I noted a typo. Appr. location: /admin/settings/class-simple-event-planner-template-settings.php#L168
Add classes seprated by space or comma e.g. container sep-container or container,sep-container
seprated → separated
By the way, this string would be easier to read if you add quotation marks or code tags around the sample strings.