Fix the command to check allocatable K8S resources

Change-Id: I3a8b83dca08b332c59982f30d79a8f8a812f6147
diff --git a/edge_deployment/bess_upf_deployment.rst b/edge_deployment/bess_upf_deployment.rst
index fb8e101..e130853 100644
--- a/edge_deployment/bess_upf_deployment.rst
+++ b/edge_deployment/bess_upf_deployment.rst
@@ -60,7 +60,7 @@
 
 .. code-block:: shell
 
-   $ kubectl get nodes -o json | jq '.items[].status.available'
+   $ kubectl get nodes -o json | jq '.items[].status.allocatable'
    {
      "cpu": "95",
      "ephemeral-storage": "1770223432846",