Replace markdown-include dependency with mkdocs-include-markdown-plugin

docs/content/reference/routing-configuration/http/middlewares/digestauth.md

@@ -82,4 +82,4 @@ On Kubernetes, you don’t use the `users` or `usersFile` fields. Instead, you r
 - `kubernetes.io/basic-auth secret`: This secret type contains two keys—`username` and `password`—but is generally suited for a smaller number of users. Please note that these keys are not hashed or encrypted in any way, and therefore is less secure than the other method.
 - Opaque secret with a users field: Here, the secret contains a single string field (often called `users`) where each line represents a user. This approach allows you to store multiple users in one secret.
 
-{!traefik-for-business-applications.md!}
+{% include-markdown "includes/traefik-for-business-applications.md" %}