Updated multi-tenant param name for stats charts

ref https://linear.app/tryghost/issue/ANAL-27/setup-tinybird-project-and-cicd

- We've settled on a name for the param of site_uuid
- Need to update the chart code that was added prior to this final decision

ghost/admin/app/components/stats/charts/top-locations.js

@@ -15,14 +15,14 @@ export default class TopPages extends Component {
 
         /**
          * @typedef {Object} Params
-         * @property {string} cid
+         * @property {string} site_uuid
          * @property {string} [date_from]
          * @property {string} [date_to]
          * @property {number} [limit]
          * @property {number} [skip]
          */
         const params = {
-            cid: this.config.stats.id,
+            site_uuid: this.config.stats.id,
             date_from: startDate.format('YYYY-MM-DD'),
             date_to: endDate.format('YYYY-MM-DD')
         };