Issue 3049 - Canonical URLs don't fallback to some browser languages

locales/zh_CN/ios-support/index.json

 {
   "install":{
     "message":"安装 iOS 版Adblock浏览器"
   },
   "adding-filter-list":{
     "message":"添加一个过滤规则列表"
   },
   "removing-filter-list":{
     "message":"删除一个过滤规则列表"
   },
   "acceptable-ads-config":{
     "message":"配置可接受广告"
   },
   "additional-filter-lists":{
     "message":"禁用跟踪、 恶意软件域、 社交媒体按钮和反广告过滤的消息"
   },
   "changing-search-engine":{
     "message":"更改默认搜索引擎"
   },
   "disable-search-suggestions":{
     "message":"禁用搜索建议"
   },
   "view-whitelisted-websites":{
     "message":"查看列入白名单的网站"
   },
   "title":{
     "message":"iOS支持"
   }
 }