modify webpage links

Author: minghuama

docs/pages/leaderboard.md

@@ -17,7 +17,7 @@ hide:
   <div style="margin-top: 6px; margin-bottom: 20px;" class="column has-text-centered">
       <div class="nav">
           <span class="nav-block">
-              <a href="/" class="link-btn">
+              <a href="https://microsoft.github.io/AIOpsLab/" class="link-btn">
                   <span class="link-text"><i class="fa-solid fa-house"></i>&nbspHome</span>
               </a>
           </span>