docs: Hint on kubelet dir special installation guides (#576)

* docs: Hint on kubelet dir special installation guides

* Apply suggestions from code review

Co-authored-by: Andrew Kenworthy <[email protected]>

---------

Co-authored-by: Andrew Kenworthy <[email protected]>

Author: sbernauer

docs/modules/secret-operator/pages/troubleshooting.adoc

@@ -17,6 +17,9 @@
 . Does the PersistentVolume have any relevant events? (`kubectl describe pv/$PV_NAME`)
 . Is the CSIDriver object named `secrets.stackable.tech` configured correctly?
 . Is the CSI driver registered on the relevant CSINode objects? (`kubectl get csinode/$NODE_NAME -o yaml` should contain the driver `secrets.stackable.tech`)
+.. If not, please check if your Kubernetes distribution uses a non-default kubelet dir.
+   The distributions known to be using a non-default kubelet dir are listed in the xref:installation.adoc[installation guide].
+   Please follow the special installation guide there.
 . Does the secret-operator sidecar container named `node-driver-registrar` have any relevant log entries?
 . Does the kubelet have any relevant log entries?
 . When running on OpenShift also have a look at the xref:openshift.adoc[OpenShift documentation].