docs: standardize region tagging (GoogleCloudPlatform#1247)

Author: Strykrol

asset/src/search_all_iam_policies.php

@@ -26,6 +26,7 @@
 $pageSize = isset($argv[3]) ? (int) $argv[3] : 0;
 $pageToken = isset($argv[4]) ? $argv[4] : '';
 
+// [START asset_quickstart_search_all_iam_policies]
 // [START asset_search_all_iam_policies]
 use Google\Cloud\Asset\V1\AssetServiceClient;
 
@@ -50,3 +51,4 @@
     print($policy->getResource() . PHP_EOL);
 }
 // [END asset_search_all_iam_policies]
+// [END asset_quickstart_search_all_iam_policies]

asset/src/search_all_resources.php

@@ -28,6 +28,7 @@
 $pageToken = isset($argv[5]) ? $argv[5] : '';
 $orderBy = isset($argv[6]) ? $argv[6] : '';
 
+// [START asset_quickstart_search_all_resources]
 // [START asset_search_all_resources]
 use Google\Cloud\Asset\V1\AssetServiceClient;
 
@@ -56,3 +57,4 @@
     print($resource->getName() . PHP_EOL);
 }
 // [END asset_search_all_resources]
+// [END asset_quickstart_search_all_resources]