fix focus to blur

assets/js/sumorobot.js

@@ -530,7 +530,7 @@ window.onload = function() {
     });
     
     /* when robot-id input field gets unfocused */
-    $("#robot-id").focus(function() {
+    $("#robot-id").blur(function() {
         /* if the robot-id input value is the previously set "sumo-" */
         if ($("#robot-id").val() === "sumo-") {
             /* remove the value */