update doc

en/thread.html

@@ -8,7 +8,7 @@
   
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   
-  <title>thread &mdash; Arthas 3.3.6 documentation</title>
+  <title>thread &mdash; Arthas 3.3.7 documentation</title>
   
 
   
@@ -67,7 +67,7 @@
             
             
               <div class="version">
-                3.3.6
+                3.3.7
               </div>
             
           
@@ -223,6 +223,7 @@
             
   <div class="section" id="thread">
 <h1>thread<a class="headerlink" href="#thread" title="Permalink to this headline">¶</a></h1>
+<p><a class="reference external" href="https://alibaba.github.io/arthas/arthas-tutorials?language=en&amp;id=command-thread"><code class="docutils literal notranslate"><span class="pre">thread</span></code> online tutorial</a></p>
 <blockquote>
 <div><p>Check the basic info and stack trace of the target thread.</p>
 </div></blockquote>