test: add Rector+ECS

src/Command/AbstractSpipCommand.php

@@ -9,7 +9,8 @@ abstract class AbstractSpipCommand extends BaseCommand
     protected function getRootDir(): string
     {
         $composer = $this->requireComposer();
-        $vendorDir = $composer->getConfig()->get('vendor-dir');
+        $vendorDir = $composer->getConfig()
+            ->get('vendor-dir');
 
         return \realpath($vendorDir . '/..') ?: '';
     }