fix: use author from site rather than post and don't humanize author …

…name (#189)

using humanize on the name uses sentence case rather than title case,
thus using lowercase for all words except the first. This way, the
author can choose how they want their name to look.

layouts/partials/meta/post.html

@@ -21,10 +21,10 @@
     <meta property="article:published_time" content={{ $ISO_date | safeHTML }} />
     <meta property="og:url" content="{{ .Permalink }}" />
 
-    {{ with.Params.author }}
-    <meta property="og:article:author" content="{{humanize . }}" />
-    <meta property="article:author" content="{{humanize . }}" />
-    <meta name="author" content="{{humanize . }}" />
+    {{ with.Site.Params.author }}
+    <meta property="og:article:author" content="{{ .name }}" />
+    <meta property="article:author" content="{{ .name }}" />
+    <meta name="author" content="{{ .name }}" />
     {{ end }}
 
     {{ with.Params.category }}