CS fixes

src/Monolog/Handler/SlackWebhookHandler.php

@@ -90,7 +90,7 @@ class SlackWebhookHandler extends AbstractProcessingHandler
             CURLOPT_POST => true,
             CURLOPT_RETURNTRANSFER => true,
             CURLOPT_HTTPHEADER => array('Content-type: application/json'),
-            CURLOPT_POSTFIELDS => $postString
+            CURLOPT_POSTFIELDS => $postString,
         );
         if (defined('CURLOPT_SAFE_UPLOAD')) {
             $options[CURLOPT_SAFE_UPLOAD] = true;