Some fixes in doc.

docs/index.html

@@ -185,7 +185,7 @@ <h2 class="subtitle has-text-centered">
         <!-- Your image here -->
         <img src="img/mgg_real.gif" alt="MY ALT TEXT"/>
         <h2 class="subtitle has-text-centered">
-          Exploration Trajectory and map build by 3 robots during the Field tests in Mars-analog terrain
+          Exploration trajectory and map built by 3 robots during the field tests in Mars-analog terrain
         </h2>
       </div>
     </div>
@@ -312,13 +312,6 @@ <h2 class="title is-3">Video</h2>
 <!-- End youtube video -->
 
 
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-
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 <!-- Paper poster -->
 <!-- <section class="hero is-small is-light">
   <div class="hero-body">
@@ -363,6 +356,21 @@ <h2 class="title">BibTeX</h2>
 <!-- Statcounter tracking code -->
 
 <!-- You can add a tracker to track page visits by creating an account at statcounter.com -->
+
+<!-- Default Statcounter code for MGG Planner https://mistlab.ca/MGGPlanner/ -->
+<script type="text/javascript">
+  var sc_project=13082675; 
+  var sc_invisible=1; 
+  var sc_security="af363299"; 
+  var scJsHost = "https://";
+  document.write("<sc"+"ript type='text/javascript' src='" + scJsHost+
+  "statcounter.com/counter/counter.js'></"+"script>");
+  </script>
+  <noscript><div class="statcounter"><a title="real time web analytics"
+  href="https://statcounter.com/" target="_blank"><img class="statcounter"
+  src="https://c.statcounter.com/13082675/0/af363299/0/" alt="real time web
+  analytics" referrerPolicy="no-referrer-when-downgrade"></a></div></noscript>
+  <!-- End of Statcounter Code -->
 
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