Fix meta description

Author: rubenwardy

_includes/layouts/base.html

@@ -11,11 +11,11 @@
 	<meta name="og:url" content="https://www.luanti.org{{ page.url }}">
 	<meta name="og:title" content="{{ title | i18n | escape }}">
 	<meta name="og:site_name" content="{{ 'Luanti' | i18n }}">
-	{% if page.description %}
+	{% if description %}
 	<meta name="og:description" content="{{ description | i18n | escape | strip }}">
 	<meta name="description" content="{{ description | i18n | escape | strip }}">
 	{% endif %}
-	{% if page.image %}
+	{% if image %}
 	<meta name="og:image" content="{{ image | absolute_url }}">
 	{% endif %}
 	<link rel="alternate" hreflang="{{ lang }}" href="{{ page.url | absolute_url }}">