Fix php code standard

Author: Jeremiah VALERIE

tests/Generator/TypeGeneratorTest.php

@@ -154,7 +154,7 @@ public function testProcessInvalidPlaceHoldersReplacements(): void
         $this->expectExceptionMessage(\sprintf(
             'Generator [%s::generateFake] for placeholder "fake" is not callable.',
             TypeGenerator::class
-            ));
+        ));
         $this->typeGenerator->setSkeletonDirs(__DIR__.'/../Resources/Skeleton');
 
         $this->generateClasses($this->getConfigs());