Fix return type

Author: bobvandevijver

src/Configuration/Config.php

@@ -6,6 +6,7 @@
 
 use Bolt\Collection\DeepCollection;
 use Bolt\Common\Arr;
+use Bolt\Configuration\Content\ContentType;
 use Bolt\Configuration\Parser\BaseParser;
 use Bolt\Configuration\Parser\ContentTypesParser;
 use Bolt\Configuration\Parser\GeneralParser;
@@ -198,15 +199,15 @@ public function getMediaTypes(): Collection
         return new Collection($this->get('general/accept_media_types'));
     }
 
-    public function getContentType(string $name): ?Collection
+    public function getContentType(string $name): ?ContentType
     {
         $name = mb_trim($name);
 
         if ($this->has('contenttypes/' . $name)) {
             return $this->get('contenttypes/' . $name);
         }
 
-        /** @var Collection $cts */
+        /** @var Collection<int, ContentType> $cts */
         $cts = $this->get('contenttypes');
 
         foreach (['singular_slug', 'name', 'singular_name'] as $key) {