add doc link, tweak redundant indices

Author: Jessica Shi

codegen.html

@@ -133,14 +133,13 @@ <h6 style="margin-bottom: 0px; margin-top: 18px">Input a tensor algebra expressi
           <div class="mdl-grid" style="padding-top: 6px">
             <div class="mdl-layout-spacer"></div>
             <div class="mdl-cell mdl-cell--9-col">
-              <!-- <div>
-                <span style="font-size: 14px;margin-left: 50px">Documentation on the scheduling language can be found here [URL to come].</span>
-              </div> -->
               <div>
                 <button id="btnSchedule" class="mdl-button mdl-js-button mdl-button--raised mdl-js-ripple-effect demo-btn" style="margin-bottom: 10px; width: 30%">
                   Add Scheduling Command
                 </button>
 
+                <span style="font-size: 12px; margin-left: 30px">Documentation on the scheduling language can be found <a href="http://tensor-compiler.org/docs/scheduling/index.html">here</a>.</span>
+
                 <div id="btnDefaults" style="float: right">
                   <button id="btnCPU" class="mdl-button mdl-js-button mdl-button--raised mdl-js-ripple-effect demo-btn" style="margin-right: 10px; width: inherit">
                     SpMV CPU

javascripts/demo.js

@@ -189,8 +189,9 @@ function demo() {
         var command = model.schedule[i]["command"];
         var parameters = model.schedule[i]["parameters"];
         for (var j = 0; j < parameters.length; ++j) {
-          if (parameters[j] && model.isParameterType(command, j, "default")) {
-            indices.push(parameters[j]); 
+          var index = parameters[j]; 
+          if (index && model.isParameterType(command, j, "default") && !indices.includes(index)) {
+            indices.push(index); 
           }
         }
       }