doc: add mirror site #102.

Author: jaywcjlove

template/contributors.ejs

@@ -201,6 +201,7 @@
   </p>
   <h1 id="镜像网站">镜像网站</h1>
   <div class="links">
+    <a target="_blank" href="https://linux-command.235978.xyz">linux-command.235978.xyz</a>
     <a target="_blank" href="https://linux.hycer.cn">linux.hycer.cn</a>
     <a target="_blank" href="https://linux.chaoxi.online">chaoxi.online</a>
     <a target="_blank" href="https://command.iced.eu.org">iced.eu.org</a>