Use valid OG meta

Author: csswizardry

_includes/head.html

@@ -110,14 +110,18 @@
 <meta name=twitter:domain content=csswizardry.com>
 <meta name=twitter:creator content=@csswizardry>
 <meta property=og:type content=website>
-<meta name=twitter:title property=og:title content="{{ page.title }} – CSS Wizardry">
+<meta property=og:title content="{{ page.title }} – CSS Wizardry">
+<meta name=twitter:title content="{{ page.title }} – CSS Wizardry">
 {% if page.meta %}
-<meta name=twitter:description property=og:description content="{{ page.meta }}">
+<meta property=og:description content="{{ page.meta }}">
+<meta name=twitter:description content="{{ page.meta }}">
 {% endif %}
 {% if page.main %}
-<meta name=twitter:image property=og:image content="{{ page.main }}">
+<meta property=og:image content="{{ page.main }}">
+<meta name=twitter:image content="{{ page.main }}">
 {% else %}
-<meta name=twitter:image property=og:image content=https://csswizardry.com/img/css/masthead-small.jpg>
+<meta property=og:image content=https://csswizardry.com/img/css/masthead-small.jpg>
+<meta name=twitter:image content=https://csswizardry.com/img/css/masthead-small.jpg>
 {% endif %}
 
 <link rel=alternate type=application/atom+xml href=https://csswizardry.com/feed.xml>