set parseMd result variable to empty list for edit new content

backstage/static/js/parsers.js

@@ -6,7 +6,7 @@ function parseMd(content) {
   var preImgObject = {'image': {}};
   var isNotFrontMatterCount = 0;
   var isAmpImgRange = false;
-  var result = [{title: '', data: []}];
+  var result = [];
 
   for (const line of content.split('\n')) {
     if (isNotFrontMatterCount < 2) {