Fix syntax

Minishlink · Minishlink · commit 0e75af425126 · 2020-08-02T16:58:01.000+08:00
diff --git a/src/SubscriptionInterface.php b/src/SubscriptionInterface.php
@@ -16,7 +16,8 @@
 /**
  * @author Sergii Bondarenko <sb@firstvector.org>
  */
-interface SubscriptionInterface {
+interface SubscriptionInterface
+{
     /**
      * @return string
      */
