Fixed Email Router naming in docs and debug call

- this was likely copied and pasted from the preview router but we
  forgot to change the name

core/frontend/services/routing/EmailRouter.js

@@ -3,11 +3,11 @@ const urlUtils = require('../../../shared/url-utils');
 const controllers = require('./controllers');
 
 /**
- * @description Preview Router.
+ * @description Email Router.
  */
 class EmailRouter extends ParentRouter {
     constructor(RESOURCE_CONFIG) {
-        super('PreviewRouter');
+        super('EmailRouter');
 
         this.RESOURCE_CONFIG = RESOURCE_CONFIG.QUERY.email;