♻️readmo: change data-url from required to optional (#27536)

Co-authored-by: Kieran Boyle <kboyle@verizonmedia.com>

ads/readmo.js

@@ -21,14 +21,16 @@ import {loadScript, validateData} from '../3p/3p';
  * @param {!Object} data
  */
 export function readmo(global, data) {
-  validateData(data, ['section', 'url']);
+  validateData(data, ['section']);
 
   const config = {
     container: '#c',
     amp: true,
   };
 
-  global.publisherUrl = data.url;
+  if (data.url) {
+    global.publisherUrl = data.url;
+  }
 
   Object.keys(data).forEach((property) => {
     config[property] = data[property];

ads/readmo.md

@@ -28,7 +28,6 @@ ReadMo only requires a section code to run. Please work with your account manage
   height="320"
   type="readmo"
   layout="responsive"
-  data-url="https://yourdomain.com"
   data-infinite="true"
   data-section="1234567"
 >
@@ -38,12 +37,12 @@ ReadMo only requires a section code to run. Please work with your account manage
 ### Required parameters
 
 - `data-section` : A unique identifier that represents your site and placement
-- `data-url` : The url that the section is allowed to run on
 
 ### Optional parameters
 
 - `data-module` : Defines the type of module to render (`end-of-article`, `smart-feed`, `smart-feed-video`, `side-rail`)
 - `data-infinite` : If true, enables infinite feed for your module
 - `data-title` : The title that appears above the module (defaults to "You May Like")
 - `data-sponsored-by-label` : Text override to the default "Sponsored by" label that appears next to the sponsors name
+- `data-url` : Publisher url override
 - `json` : Use this to pass additional configuration properties (ex: `json='{ "contentId": 1234 }'`)