MAPG-235 refactored whitespaces

src/PersistentData/Model/Challenge.php

@@ -33,7 +33,7 @@ class Challenge extends Model
 
     public function setTimeLimit(?int $timeLimit): void
     {
-        if(isset($timeLimit)) {
+        if (isset($timeLimit)) {
             $this->timeLimit = $timeLimit;
         }
     }