Fix #1224 Deprecated code warning in hugo v0.112.0

Changed site variables from 'Language.Params' -> 'Site.Params'
Note this change may conflict with hugo versions less than v0.112.0

See hugo docs:
  https://gohugo.io/content-management/multilingual/#changes-in-hugo-01120

See hugo-PaperMod Issue:
  https://github.com/adityatelange/hugo-PaperMod/issues/1224

	modified:   _default/single.html
	modified:   partials/header.html

layouts/_default/single.html

@@ -36,7 +36,7 @@
   {{- end }}
 
   <footer class="post-footer">
-    {{- $tags := .Language.Params.Taxonomies.tag | default "tags" }}
+    {{- $tags := .Site.Params.Taxonomies.tag | default "tags" }}
     <ul class="post-tags">
       {{- range ($.GetTerms $tags) }}
       <li><a href="{{ .Permalink }}">{{ .LinkTitle }}</a></li>