fix: correct the i18n for tab titles

_layouts/page.html

@@ -20,7 +20,8 @@ layout: default
       {% endif %}
     {% endcapture %}
 
-    {% if page.layout == 'page' or page.collection == 'tabs'%}
+    {% if page.collection == 'tabs' %}
+      {% assign tab_key = page.title | downcase %}
       {% assign title = site.data.locales[lang].tabs[tab_key] | default: page.title %}
       <h1 class="dynamic-title">
         {{ title }}

_tabs/about.md

@@ -1,5 +1,5 @@
 ---
-title: About
+# the default layout is 'page'
 icon: fas fa-info-circle
 order: 4
 ---

_tabs/archives.md

@@ -1,6 +1,5 @@
 ---
 layout: archives
-title: Archives
 icon: fas fa-archive
 order: 3
 ---

_tabs/categories.md

@@ -1,6 +1,5 @@
 ---
 layout: categories
-title: Categories
 icon: fas fa-stream
 order: 1
 ---

_tabs/tags.md

@@ -1,6 +1,5 @@
 ---
 layout: tags
-title: Tags
 icon: fas fa-tag
 order: 2
 ---