🐛 Remove array from LD+JSON data

Fixes: #596

CHANGELOG.md

@@ -23,6 +23,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ### Fixed
 
+- TypeError is output to console when viewing leaf pages ([#596](https://github.com/jpanther/congo/pull/596))
 - URL to Congo project in footer used deprecated git.io short link ([#605](https://github.com/jpanther/congo/pull/605))
 - Various typos in the docs and example site ([#608](https://github.com/jpanther/congo/pull/608), [#609](https://github.com/jpanther/congo/pull/609), [#613](https://github.com/jpanther/congo/pull/613))
 - Incorrect `render` value is used in the 'external' archetype ([#630](https://github.com/jpanther/congo/pull/630))

layouts/partials/schema.html

@@ -18,7 +18,7 @@
 {{ else if .IsPage }}
   {{- $iso8601 := "2006-01-02T15:04:05-07:00" -}}
   <script type="application/ld+json">
-  [{
+  {
     "@context": "https://schema.org",
     "@type": "Article",
     "articleSection": "{{ (site.GetPage .Section).Title | safeJS }}",
@@ -44,6 +44,6 @@
     {{ end }}
     "mainEntityOfPage": "true",
     "wordCount": "{{ .WordCount }}"
-  }]
+  }
   </script>
 {{ end }}