Remove --payload parameter (#1507)

* Fix update-keys operation

Author: cotti

src/tooling/docs-assembler/Deploying/AwsCloudFrontKeyValueStoreProxy.cs

@@ -109,7 +109,7 @@ private string ProcessBatchUpdates(
 					_ => string.Empty
 				};
 				var responseJson = CaptureMultiple(false, 1, "aws", "cloudfront-keyvaluestore", "update-keys", "--kvs-arn", kvsArn, "--if-match", eTag,
-					$"--{operation.ToString().ToLowerInvariant()}", "--payload", payload);
+					$"--{operation.ToString().ToLowerInvariant()}", payload);
 				var updateResponse = JsonSerializer.Deserialize<UpdateKeysResponse>(string.Concat(responseJson), AwsCloudFrontKeyValueStoreJsonContext.Default.UpdateKeysResponse);
 
 				if (string.IsNullOrEmpty(updateResponse?.ETag))