ci: test broken link

Signed-off-by: Michael Adler <[email protected]>

README.md

@@ -11,6 +11,8 @@ A lightweight, general-purpose workflow executor.
 
 ## Overview
 
+[test does not exist](https://www.siemens.com/does-not-exist)
+
 [_Workflows_](docs/workflows.md) are modeled as finite-state machines and are instantiated as [_Jobs_](docs/workflows.md#jobs) through which the wfx and a client progress in lock-step to perform a task.
 Such a task could be [software updating](workflow/dau/README.md) the client, progressing a work item through [Kanban](docs/workflows.md#hands-on-playing-kanban), … in essence anything requiring cooperation and coordination.
 
@@ -98,6 +100,8 @@ See [CONTRIBUTING.md](CONTRIBUTING.md) for details.
 
 ## License
 
+[another one](https://www.google.com/does-not-exist)
+
 Copyright ©️ 2023 Siemens AG.
 
 Released under the [Apache-2.0](LICENSE) license.