style: format code with PHP CS Fixer

This commit fixes the style issues introduced in 56b6357 according to the output
from PHP CS Fixer.

Details: #644

Src/pushes.php

@@ -8,7 +8,7 @@
 function handleItem($push)
 {
     echo "https://github.com/{$push->RepositoryOwner}/{$push->RepositoryName}/commit/{$push->HeadCommitId}:\n\n";
-    
+
     $token = generateInstallationToken($push->InstallationId, $push->RepositoryName);
 
     $botDashboardUrl = "https://gstraccini.bot/dashboard";