docs: fix default openebs folder

Update the directory.

Signed-off-by: Andrey Smirnov <andrey.smirnov@siderolabs.com>

website/content/v1.8/kubernetes-guides/configuration/replicated-local-storage-with-openebs.md

@@ -28,9 +28,9 @@ machine:
     openebs.io/engine: mayastor
   kubelet:
     extraMounts:
-      - destination: /var/local/openebs
+      - destination: /var/openebs/local
         type: bind
-        source: /var/local/openebs
+        source: /var/openebs/local
         options:
           - rbind
           - rshared