🐛 Fixed the Hugo syntax for length function, fixes #14

layouts/partials/post/header_meta/categories.html

@@ -1,11 +1,11 @@
 {{- if .Site.Params.postMeta.categories }}
-{{- if and .Params.categories (gt (len .Params.categories) 0) }}
+{{- with .Params.categories }}
 <span class="post-meta-item">
   <span class="post-meta-item-icon">
     <i class="far fa-folder-open"></i>
   </span>
   <span class="post-meta-item-text">{{- print (T "PostCategory") (T "SymbolColon") -}}</span>
-  {{- range (first 1 .Params.categories) }}
+  {{- range (first 1 .) }}
   <span itemprop="about" itemscope itemtype="http://schema.org/Thing">
     <a href="{{ "/categories/" | relLangURL }}{{ . | urlize }}" itemprop="url" rel="index">
       <span itemprop="name">{{- . -}}</span>