improving code

Signed-off-by: man13 <man13@inf.ufpr.br>

app/views/learning_objects/_form.html.erb

@@ -77,7 +77,7 @@
       linkInput = $("#link-input");
 
   radioButtons.change(function(e){
-    if ($(this).val()=="Link Externo"){
+    if ("Link Externo" == $(this).val()){
       linkInput.slideDown();
     }else{
       linkInput.slideUp();