Update examples

Author: MikeRayMSFT

articles/azure-arc/data/update-service-principal-credentials.md

@@ -36,7 +36,7 @@ The service principal was created at [Create service principal](upload-metrics-a
    kubectl edit secret/upload-service-principal-secret -n arc
    ```
 
-   The `kubecl edit` command opens the credentials .yml file in the default editor. 
+   The `kubectl edit` command opens the credentials .yml file in the default editor. 
 
 
 1. Edit the service principal secret. 
@@ -52,18 +52,18 @@ The service principal was created at [Create service principal](upload-metrics-a
    #
    apiVersion: v1
    data:
-     authority: aHR0cHM6Ly9sb2dpbi5taWNyb3NvZnRvbmxpbmUuY29t
-     clientId: NDNiNDcwYrFTGWYzOC00ODhkLTk0ZDYtNTc0MTdkN2YxM2Uw
-     clientSecret: VFA2RH125XU2MF9+VVhXenZTZVdLdECXFlNKZi00Lm9NSw==
-     tenantId: NzJmOTg4YmYtODZmMRFVBGTJLSATkxYWItMmQ3Y2QwMTFkYjQ3
+     authority: <authority id>
+     clientId: <client id>
+     clientSecret: <client secret>==
+     tenantId: <tenant id>
    kind: Secret
    metadata:
      creationTimestamp: "2020-12-02T05:02:04Z"
      name: upload-service-principal-secret
      namespace: arc
      resourceVersion: "7235659"
      selfLink: /api/v1/namespaces/arc/secrets/upload-service-principal-secret
-     uid: 7fb693ff-6caa-4a31-b83e-9bf22be4c112
+     uid: <globally unique identifier>
    type: Opaque
    ```
 

articles/azure-arc/data/upload-metrics-and-logs-to-azure-monitor.md

@@ -72,20 +72,20 @@ az ad sp credential reset --name <ServicePrincipalName>
 For example, to create a service principal named `azure-arc-metrics`, run the following command
 
 ```azurecli
-az ad sp create-for-rbac --name azure-arc-metrics --role Contributor --scopes /subscriptions/a345c178a-845a-6a5g-56a9-ff1b456123z2/resourceGroups/myresourcegroup
+az ad sp create-for-rbac --name azure-arc-metrics --role Contributor --scopes /subscriptions/<SubscriptionId>/resourceGroups/myresourcegroup
 ```
 
 Example output:
 
 ```output
-"appId": "2e72adbf-de57-4c25-b90d-2f73f126e123",
+"appId": "<appId>",
 "displayName": "azure-arc-metrics",
 "name": "http://azure-arc-metrics",
-"password": "5039d676-23f9-416c-9534-3bd6afc78123",
-"tenant": "72f988bf-85f1-41af-91ab-2d7cd01ad1234"
+"password": "<password>",
+"tenant": "<tenant>"
 ```
 
-Save the `appId`, `password`, and `tenant` values in an environment variable for use later. 
+Save the `appId`, `password`, and `tenant` values in an environment variable for use later. These values are in the form of globally unique identifier (GUID).
 
 # [Windows](#tab/windows)