refactor(i18n): translation key renaming (#68)

closes https://github.com/CaiJimmy/hugo-theme-stack/issues/63

layouts/partials/article/components/footer.html

@@ -12,7 +12,7 @@
     <section class="article-time">
         {{ partial "helper/icon" "clock" }}
         <span class="article-time--modified">
-            {{ T "lastUpdatedOn" }} {{ .Lastmod.Format ( or .Site.Params.dateFormat.lastUpdated "Jan 02, 2006 15:04 MST" ) }}
+            {{ T "article.lastUpdatedOn" }} {{ .Lastmod.Format ( or .Site.Params.dateFormat.lastUpdated "Jan 02, 2006 15:04 MST" ) }}
         </span>
     </section>
     {{- end -}}

layouts/partials/article/components/related-contents.html

@@ -1,7 +1,7 @@
 <aside class="related-contents--wrapper">
     {{ $related := (where (.Site.RegularPages.Related .) "Params.hidden" "!=" true) | first 5 }}
     {{ with $related }}
-        <h2 class="section-title">{{ T "relatedContents" }}</h2>
+        <h2 class="section-title">{{ T "article.relatedContents" }}</h2>
         <div class="related-contents">
             <div class="flex article-list--tile">
                 {{ range . }}