update doc

en/classloader.html

@@ -92,6 +92,7 @@
             
             
               <ul class="current">
+<li class="toctree-l1"><a class="reference external" href="https://arthas.aliyun.com/">Home</a></li>
 <li class="toctree-l1"><a class="reference external" href="https://arthas.aliyun.com/doc/arthas-tutorials.html?language=en">Online tutorials(Recommend)</a></li>
 <li class="toctree-l1"><a class="reference internal" href="install-detail.html">Installation</a></li>
 <li class="toctree-l1"><a class="reference internal" href="download.html">Download</a></li>
@@ -418,12 +419,7 @@ load class success.
   var _hmt = _hmt || [];
   (function() {
     var hm = document.createElement("script");
-    if (window.location.hostname == "arthas.gitee.io") {
-      hm.src = "https://hm.baidu.com/hm.js?ecc1b0d9aeb73da1671876133211d4d3";
-    } else { // https://arthas.aliyun.com/doc/
-      hm.src = "https://hm.baidu.com/hm.js?d5c5e25b100f0eb51a4c35c8a86ea9b4";
-    }
-
+    hm.src = "https://hm.baidu.com/hm.js?d5c5e25b100f0eb51a4c35c8a86ea9b4";
     var s = document.getElementsByTagName("script")[0]; 
     s.parentNode.insertBefore(hm, s);
   })();