Fix a link

Author: ManifoldFR

publications/simple-contact-solver/index.html

@@ -38,7 +38,7 @@
   </div>
   <div class="navbar-menu">
     <div class="navbar-start" style="flex-grow: 1; justify-content: center;">
-      <a class="navbar-item" href="https://keunhong.com">
+      <a class="navbar-item" href="https://simple-robotics.github.io">
       <span class="icon">
           <i class="fas fa-home"></i>
       </span>