contact solver: fixing title and images

Author: quentinll

publications/simple-contact-solver/index.html

@@ -6,7 +6,7 @@
         content="Contact solver of Simple simulator">
   <meta name="keywords" content="Simple, Contact, Contact Solver, Physics Simulation">
   <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>Simple</title>
+  <title>Simple Contact Solver</title>
 
   <link href="https://fonts.googleapis.com/css?family=Google+Sans|Noto+Sans|Castoro"
         rel="stylesheet">
@@ -184,7 +184,7 @@ <h2 class="title is-3">Abstract</h2>
       <div class="column is-four-fifths">
         <h2 class="title is-3">Benchmarks</h2>
         <div class="content has-text-justified">
-          <embed src="images/cassie.pdf" alt="Computational time for Cassie robot.">
+          <embed src="images/cassie.pdf" alt="Computational time for Cassie robot." type="application/pdf">
         </div>
       </div>
     </div>