[marked] add missing renderer? option on marked

marked/marked.d.ts

@@ -63,6 +63,13 @@ interface MarkedStatic {
 }
 
 interface MarkedOptions {
+    /**
+     * Type: object Default: new Renderer()
+     *
+     * An object containing functions to render tokens to HTML.
+     */
+    renderer?: Object; 
+
     /**
      * Enable GitHub flavored markdown.
      */
@@ -118,4 +125,4 @@ declare module "marked" {
     export = marked;
 }
 
-declare var marked: MarkedStatic;
+declare var marked: MarkedStatic;