refactor(i18n): simplify the structure of the translation file

i18n/zh-cn.yaml

@@ -1,60 +1,32 @@
-toggleMenu:
-    other: 切换菜单
+toggleMenu: 切换菜单
 
-darkMode:
-    other: 暗色模式
+darkMode: 暗色模式
 
 article:
-    back:
-        other: 返回
-
-    tableOfContents:
-        other: 目录
-
-    relatedContent:
-        other: 相关文章
-
-    lastUpdatedOn:
-        other: 最后更新于
-
-    readingTime:
-        other: "阅读时长: {{ .Count }} 分钟"
+    back: 返回
+    tableOfContents: 目录
+    relatedContent: 相关文章
+    lastUpdatedOn: 最后更新于
+    readingTime: "阅读时长: {{ .Count }} 分钟"
 
 notFound:
-    title:
-        other: 404 错误
-    subtitle:
-        other: 页面不存在
+    title: 404 错误
+    subtitle: 页面不存在
 
 widget:
     archives:
-        title:
-            other: 归档
-
-        more:
-            other: 更多
-
+        title: 归档
+        more: 更多
     tagCloud:
-        title:
-            other: 标签云
-
+        title: 标签云
     categoriesCloud:
-        title:
-            other: 分类
+        title: 分类
 
 search:
-    title:
-        other: 搜索
-
-    placeholder:
-        other: 输入关键词...
-
-    resultTitle:
-        other: "#PAGES_COUNT 个结果 （用时 #TIME_SECONDS 秒）"
+    title: 搜索
+    placeholder: 输入关键词...
+    resultTitle: "#PAGES_COUNT 个结果 （用时 #TIME_SECONDS 秒）"
 
 footer:
-    builtWith:
-        other: Built with {{ .Generator }}
-
-    designedBy:
-        other: 主题 {{ .Theme }} 由 {{ .DesignedBy }} 设计
+    builtWith: Built with {{ .Generator }}
+    designedBy: 主题 {{ .Theme }} 由 {{ .DesignedBy }} 设计