fix(docs): add node pool variable in proxmox template (#264)

Co-authored-by: bsctl <bsctl@clastix.io>

Author: bsctl

templates/proxmox/capi-kamaji-proxmox-template.yaml

@@ -175,4 +175,4 @@ spec:
       numSockets: ${NUM_SOCKETS}
       sourceNode: '${SOURCE_NODE}'
       templateID: ${TEMPLATE_ID}
-      pool: '${CLUSTER_NAME}-capi-pool'
+      pool: '${POOL_NAME}'