Fix PHP doc for API docs

Signed-off-by: Morris Jobke <hey@morrisjobke.de>

lib/private/Hooks/EmitterTrait.php

@@ -25,7 +25,7 @@ namespace OC\Hooks;
 trait EmitterTrait {
 
 	/**
-	 * @var (callable[])[] $listeners
+	 * @var callable[][] $listeners
 	 */
 	protected $listeners = array();
 

lib/private/Support/CrashReport/Registry.php

@@ -29,7 +29,7 @@ use Throwable;
 
 class Registry implements IRegistry {
 
-	/** @var array<IReporter> */
+	/** @var IReporter[] */
 	private $reporters = [];
 
 	/**