Fix Links & Add Link Checker (#2769)

* feat: link checker

translations/ja-jp/README.md

@@ -42,7 +42,7 @@
     <span> | </span>
     <a href="https://dioxuslabs.com/learn/0.5/"> ガイド </a>
     <span> | </span>
-    <a href="https://github.com/DioxusLabs/dioxus/blob/master/notes/README/ZH_CN.md"> 中文 </a>
+    <a href="https://github.com/DioxusLabs/dioxus/blob/main/translations/zh-cn/README.md"> 中文 </a>
     <span> | </span>
     <a href="https://github.com/DioxusLabs/dioxus/blob/master/translations/pt-br/README.md"> PT-BR </a>
   </h3>