update install script kubectl command to find kuberay-operator pod globally (#460)

Signed-off-by: googs1025 <googs1025@gmail.com>
Co-authored-by: Yuhan Liu <32589867+YuhanLiu11@users.noreply.github.com>

Author: googs1025

tutorials/00-b-install-kuberay-operator.md

@@ -60,10 +60,10 @@ Before you begin, ensure the following:
 ### Step 2: Verify the KubeRay Configuration
 
 1. **Check the Operator Pod Status:**
-   - Ensure that the KubeRay operator pod is running in the default namespace:
+   - Ensure that the KubeRay operator pod is running:
 
      ```bash
-     kubectl get pods
+     kubectl get pods -A | grep kuberay-operator
      ```
 
 2. **Expected Output:**

utils/install-kuberay.sh

@@ -12,7 +12,7 @@ helm search repo kuberay --devel
 # Install both CRDs and KubeRay operator v1.2.0.
 helm install kuberay-operator kuberay/kuberay-operator --version 1.2.0
 
-# Check the KubeRay operator Pod in `default` namespace
-kubectl get pods
+# Check the KubeRay operator Pod
+kubectl get pods -A | grep kuberay-operator
 # NAME                                READY   STATUS    RESTARTS   AGE
 # kuberay-operator-f89ddb644-psts7    1/1     Running   0          33m