Fix typo in API Platform configuration key (mappings → mapping) in ModuleExtension

Author: yceruto

src/Infrastructure/Symfony/Module/ModuleExtension.php

@@ -83,7 +83,7 @@ private function configureApiPlatformResources(ContainerConfigurator $container,
         }
 
         $container->extension('api_platform', [
-            'mappings' => [
+            'mapping' => [
                 'paths' => [$dir],
             ],
         ], true);