malformed Json in partials fixed

Malformed json causes hugo --minify to fail

layouts/partials/seo_schema.html

@@ -16,6 +16,7 @@
 {{ end }} 
 {{ if .IsPage }}
 <script type="application/ld+json">
+{
  "@context" : "http://schema.org",
     "@type" : "BlogPosting",
     "mainEntityOfPage": {
@@ -40,4 +41,4 @@
     "keywords" : [ {{ if isset .Params "tags" }}{{ range .Params.tags }}"{{ . }}",{{ end }}{{ end }} {{with .Site.Title}}"{{ .}}"{{ end }}]
 }
 </script>
-{{ end }}
+{{ end }}