don't use 'let' in .html files

sim/public/instructions.html

@@ -3,7 +3,7 @@
 
 <head>
     <meta charset="utf-8">
-    <title>Arduino Instructions</title>
+    <title>Assembly Instructions</title>
     <style>
         
         svg {
@@ -177,7 +177,12 @@ mixpanel.init("762fef19c053a0ea4cec43d2fecae76e");</script><!-- end Mixpanel -->
     <script type="text/javascript">
         (function () {  
         ksRunnerReady(function() {
-            let loading = document.getElementById('loading'); 
+            var orgLogo = pxt.appTarget.appTheme.organizationLogo;            
+            if (orgLogo)
+                $('#front-panel').append(
+                    $('<img/>').attr('class', 'organization').attr('src', orgLogo)
+                );
+            var loading = document.getElementById('loading'); 
             pxsim.instructions.drawInstructions();
             $(loading).hide();
         });
@@ -193,8 +198,6 @@ mixpanel.init("762fef19c053a0ea4cec43d2fecae76e");</script><!-- end Mixpanel -->
             <div id="proj-code-container">
             </div>
         </div>
-
-        <img class="organization" 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truncated
     </div>
 </body>
 </html>