update kuber to working

Containerization & Orchestration/Kubernetes/label.md

@@ -0,0 +1,9 @@
+- **Set a Custom Label on a Node**
+
+  ```bash
+  kubectl label node <node-name> kubernetes.io/<label-key>=<label-value>
+  ```
+
+  > **Note:** Replace `<node-name>`, `<label-key>`, and `<label-value>` with your desired values.
+
+