docs: add example of ascode artifact_manager integration (#6139)

Author: sguiheux

docs/content/docs/concepts/files/workflow-syntax.md

@@ -27,6 +27,9 @@ workflow:
 hooks:
   build:
   - type: RepositoryWebHook
+integrations:
+  my-artifactory-integration-name:
+    type: artifact_manager
 notifications:
 - type: email
   pipelines:
@@ -81,6 +84,10 @@ Example with using LUA syntax as advanced condition:
       == "master" and git_repository == "ovh/cds")
 ```
 
+## Integrations
+
+[Artifactory Integration]({{<relref "/docs/integrations/artifact-manager.md">}})
+
 ## Notifications
 
 [Notifications documentation]({{<relref "/docs/concepts/workflow/notifications.md">}})