fix: avoid linebreak in currency values

src/Form/ParticipantType.php

@@ -144,7 +144,7 @@ class ParticipantType extends AbstractType
                         return $service->label;
                     }
 
-                    return sprintf('%s (%s €)',
+                    return sprintf('%s (%s €)',
                         $service->label,
                         number_format($price, 2, ',', '.')
                     );