Update index.html

index.html

@@ -234,7 +234,7 @@ <h4>Optimal Control</h4>
     <div class="mu-service-content-single">
         <img src="assets/images/unavsim.png" alt="Model Predictive Control" class="img-responsive">
         <h4>Simulation</h4>
-        <p><a href="https://github.com/open-airlab/UNav-Sim" style="color: blue; text-decoration: underline;">Underwater robotics simulator for autonomous navigation and control </a></p>
+        <p><a href="https://github.com/open-airlab/UNav-Sim">Underwater robotics simulator for autonomous navigation and control</a></p>
     </div>
 </div>