{DevCenter} Fix DevCenter Readme Sample (Azure#29114)

Co-authored-by: Tong Xu (MSFT) <57166602+v-xuto@users.noreply.github.com>

Author: SaurabhSharma-MSFT

sdk/devcenter/azure-developer-devcenter/README.md

@@ -41,7 +41,8 @@ Use the returned token credential to authenticate the client:
 >>> from azure.developer.devcenter import DevCenterClient
 >>> from azure.identity import DefaultAzureCredential
 >>> tenant_id = os.environ['AZURE_TENANT_ID']
->>> client = DevCenterClient(tenant_id=tenant_id, dev_center="my_dev_center", credential=DefaultAzureCredential())
+>>> endpoint = os.environ["DEVCENTER_ENDPOINT"]
+>>> client = DevCenterClient(endpoint, credential=DefaultAzureCredential())
 ```
 
 ## Examples
@@ -53,7 +54,8 @@ Use the returned token credential to authenticate the client:
 >>> from azure.identity import DefaultAzureCredential
 >>> from azure.core.exceptions import HttpResponseError
 >>> tenant_id = os.environ['AZURE_TENANT_ID']
->>> client = DevCenterClient(tenant_id=tenant_id, dev_center="my_dev_center", credential=DefaultAzureCredential())
+>>> endpoint = os.environ["DEVCENTER_ENDPOINT"]
+>>> client = DevCenterClient(endpoint, credential=DefaultAzureCredential())
 >>> try:
         # Fetch control plane resource dependencies
         projects = list(client.dev_center.list_projects(top=1))
@@ -88,26 +90,30 @@ Use the returned token credential to authenticate the client:
 >>> from azure.identity import DefaultAzureCredential
 >>> from azure.core.exceptions import HttpResponseError
 >>> tenant_id = os.environ['AZURE_TENANT_ID']
->>> client = DevCenterClient(tenant_id=tenant_id, dev_center="my_dev_center", credential=DefaultAzureCredential())
+>>> endpoint = os.environ["DEVCENTER_ENDPOINT"]
+>>> client = DevCenterClient(endpoint, credential=DefaultAzureCredential())
 >>> try:
         # Fetch control plane resource dependencies
         target_project_name = list(client.dev_center.list_projects(top=1))[0]['name']
         target_catalog_item_name = list(client.environments.list_catalog_items(target_project_name, top=1))[0]['name']
         target_environment_type_name = list(client.environments.list_environment_types(target_project_name, top=1))[0]['name']
+        target_catalog_name = list(client.environments.list_catalog_items(target_project_name, top=1))[0]['catalogName']
 
         # Stand up a new environment
         create_response = client.environments.begin_create_or_update_environment(target_project_name,
                                                            "Dev_Environment",
-                                                           {"catalogItemName": target_catalog_item_name, "environmentType": target_environment_type_name})
+                                                           {"catalogName": target_catalog_name,
+                                                            "catalogItemName": target_catalog_item_name,
+                                                            "environmentType": target_environment_type_name
+                                                            })     
+        
         environment_result = create_response.result()
 
         LOG.info(f"Provisioned environment with status {environment_result['provisioningState']}.")
 
         # Fetch deployment artifacts
-        artifact_response = client.environments.list_artifacts_by_environment(target_project_name, "Dev_Environment")
-
-        for artifact in artifact_response:
-            LOG.info(artifact)
+        environment = client.environments.get_environment_by_user(target_project_name, "Dev_Environment")
+        LOG.info(environment)
 
         # Tear down the environment when finished
         delete_response = client.environments.begin_delete_environment(target_project_name, "Dev_Environment")