fix toggle comments in handlebars mode

node_modules/ace/lib/ace/mode/handlebars.js

@@ -14,14 +14,13 @@ var Mode = function() {
     this.HighlightRules = HandlebarsHighlightRules;
     this.$behaviour = new HtmlBehaviour();
     
-    
     this.foldingRules = new HtmlFoldMode();
 };
 
 oop.inherits(Mode, HtmlMode);
 
 (function() {
-    this.blockComment = {start: "{!--", end: "--}"};
+    this.blockComment = {start: "{{!--", end: "--}}"};
     this.$id = "ace/mode/handlebars";
 }).call(Mode.prototype);