add experiment id guidance

Author: rsgel

articles/chaos-studio/chaos-studio-samples-rest-api.md

@@ -172,7 +172,7 @@ This section describes the parameters used throughout this document and how you
 | Parameter name | Definition | Lookup | Example |
 | --- | --- | --- | --- |
 | {apiVersion} | Version of the API to use when you execute the command provided | Can be found in the [API documentation](/rest/api/chaosstudio/) | `2023-11-01` |
-| {experimentId} | Azure Resource ID for the experiment | Can be found on the [Chaos Studio Experiment page](https://portal.azure.com/#blade/HubsExtension/BrowseResource/resourceType/Microsoft.chaos%2Fchaosexperiments) | `/subscriptions/6b052e15-03d3-4f17-b2e1-be7f07588291/resourceGroups/my-resource-group/providers/Microsoft.Chaos/experiments/my-chaos-experiment` |
+| {experimentId} | Azure Resource ID for the experiment | Can be found on the [Chaos Studio Experiment page](https://portal.azure.com/#blade/HubsExtension/BrowseResource/resourceType/Microsoft.chaos%2Fchaosexperiments) or with a [GET call](#list-all-the-experiments-in-a-resource-group) to the `/experiments` endpoint | `/subscriptions/6b052e15-03d3-4f17-b2e1-be7f07588291/resourceGroups/my-resource-group/providers/Microsoft.Chaos/experiments/my-chaos-experiment` |
 | {experimentName.json} | JSON that contains the configuration of the chaos experiment | Generated by the user | `experiment.json` (See [a CLI tutorial](chaos-studio-tutorial-service-direct-cli.md) for a full example file) |
 | {subscriptionId} | Subscription ID where the target resource is located | Find in the [Azure portal Subscriptions page](https://portal.azure.com/#blade/Microsoft_Azure_Billing/SubscriptionsBlade) or by running `az account list --output table` | `6b052e15-03d3-4f17-b2e1-be7f07588291` |
 | {resourceGroupName} | Name of the resource group where the target resource is located | Find in the [Resource Groups page](https://portal.azure.com/#blade/HubsExtension/BrowseResourceGroups) or by running `az group list --output table` | `my-resource-group` |