Issue #110: update book tutorial

Signed-off-by: horea <[email protected]>

Author: Howriq

docs/book/v6/tutorials/create-book-module.md

@@ -723,8 +723,8 @@ class ConfigProvider
     public function __invoke(): array
     {
         return [
-            'dependencies'     => $this->getDependencies(),
-            'doctrine'         => $this->getDoctrineConfig(),
+            'dependencies' => $this->getDependencies(),
+            'doctrine'     => $this->getDoctrineConfig(),
         ];
     }