Add Mercedes-Benz as known instance to innersource-portal.md (#561)

Author: spier

patterns/2-structured/innersource-portal.md

@@ -76,8 +76,8 @@ A [reference implementation](https://github.com/SAP/project-portal-for-innersour
 ![Santander InnerSource Portal](../../assets/img/santander_portal.png "Banco Santander InnerSource Portal")
 
 * **Airbus** used the [SAP Portal](https://github.com/SAP/project-portal-for-innersource) as a Proof of Concept. It is now using the [Bazaar plugin](https://github.com/backstage/backstage/blob/master/plugins/bazaar/README.md) of [Backstage](https://backstage.io) as the latter became the official developer experience tool internally. It provides a convenient self-registering capability for all the divisions.
-
 * **Mercado Libre** use an instance of the [SAP portal](https://github.com/SAP/project-portal-for-innersource) to discover existing InnerSource projects within the organization.
+* **Mercedes-Benz** is [using](https://opensource.mercedes-benz.com/news/sponsor_innersource_commonsoss) the SAP reference implementation mentioned above for their InnerSource Portal.
 
 ## References