Autofix namespace declaration spacing

[MAILPOET-2409]

lib/API/JSON/API.php

@@ -1,4 +1,5 @@
 <?php
+
 namespace MailPoet\API\JSON;
 
 use MailPoet\API\JSON\Endpoint;

lib/API/JSON/Error.php

@@ -1,4 +1,5 @@
 <?php
+
 namespace MailPoet\API\JSON;
 
 final class Error {

lib/API/JSON/ErrorResponse.php

@@ -1,6 +1,7 @@
 <?php
 
 namespace MailPoet\API\JSON;
+
 use MailPoet\WP\Functions as WPFunctions;
 
 class ErrorResponse extends Response {

lib/API/JSON/Response.php

@@ -1,5 +1,7 @@
 <?php
+
 namespace MailPoet\API\JSON;
+
 use MailPoet\WP\Functions as WPFunctions;
 
 abstract class Response {

lib/API/JSON/SuccessResponse.php

@@ -1,4 +1,5 @@
 <?php
+
 namespace MailPoet\API\JSON;
 
 class SuccessResponse extends Response {