docs: correct mistakes in orm examples

Author: Machometec

src/app/orm/migrations/migrations.component.html

@@ -181,8 +181,8 @@ <h4>Seeding the database</h4>
 &lcub;
    public function up(MigrationBuilder $builder): void
    &lcub;
-      $roles = ['uncategorized', 'featured', 'events', 'news'];
-      foreach ($roles as $id => $name) &lcub;
+      $categories = ['uncategorized', 'featured', 'events', 'news'];
+      foreach ($categories as $id => $name) &lcub;
          $builder->insertData('Category', [
             'Id'   => ++$id,
             'Name' => $name

src/app/orm/start/start.component.html

@@ -207,7 +207,7 @@ <h3>Registering the EntityContext</h3>
       $builder->register(function ($services) use ($configuration) &lcub; //;
          // Adding EntityContext
          $services->addEntityContext(BlogContext::class,
-            function ($options) &lcub;
+            function ($options) use ($configuration) &lcub; //;
                $options->ProviderType = $configuration->getValue('Database:ProviderType');
                $options->ConnectionString = $configuration->getValue('Database:ConnectionString');
             &#125;