undid double stringify

dist/swagger-ui.js

@@ -2096,7 +2096,7 @@ helpers = this.merge(helpers, Handlebars.helpers); data = data || {};
       } else if (contentType === "application/json" || /\+json$/.test(contentType)) {
         json = null;
         try {
-          json = JSON.stringify(JSON.stringify(JSON.parse(content), null, "  "));
+          json = JSON.stringify(JSON.parse(content), null, "  ");
         } catch (_error) {
           e = _error;
           json = "can't parse JSON.  Raw result:\n\n" + content;

src/main/coffeescript/view/OperationView.coffee

@@ -368,7 +368,7 @@ class OperationView extends Backbone.View
     else if contentType is "application/json" || /\+json$/.test(contentType)
       json = null
       try
-        json = JSON.stringify(JSON.stringify(JSON.parse(content), null, "  "))
+        json = JSON.stringify(JSON.parse(content), null, "  ")
       catch e
         json = "can't parse JSON.  Raw result:\n\n" + content
       code = $('<code />').text(json)