removing mention of postman per security guidance

Author: Blackmist

articles/machine-learning/how-to-configure-private-link.md

@@ -334,7 +334,7 @@ The following restrictions apply to IP address ranges:
 
 - Only IPv4 addresses are supported for configuration of storage firewall rules.
 
-- When this feature is enabled, you can test public endpoints using any client tool such as Postman or others, but the Endpoint Test tool in the portal is not supported.
+- When this feature is enabled, you can test public endpoints using any client tool such as Curl, but the Endpoint Test tool in the portal is not supported.
 
 ## Securely connect to your workspace
 

articles/machine-learning/how-to-registry-network-isolation.md

@@ -235,7 +235,7 @@ $accessToken = (az account get-access-token | ConvertFrom-Json).accessToken
     az account get-access-token --query accessToken
     ```
 
-1. Use a REST client such as Postman or Curl to make a GET request to the discovery URL. Use the access token retrieved in the previous step for authorization. In the following example, replace `<region>` with the region where your registry is located and `<registry_name>` with the name of your registry. Replace `<token>` with the access token retrieved in the previous step:
+1. Use a REST client such as Curl to make a GET request to the discovery URL. Use the access token retrieved in the previous step for authorization. In the following example, replace `<region>` with the region where your registry is located and `<registry_name>` with the name of your registry. Replace `<token>` with the access token retrieved in the previous step:
 
     ```bash
     curl -X GET "https://<region>.api.azureml.ms/registrymanagement/v1.0/registries/<registry_name>/discovery" -H "Authorization: Bearer <token>" -H "Content-Type: application/json"